After playing with this for almost 2 entire days, I think I have sorted my issue out..

There were quite a few things that I had to do to get it working, none of which were in the instruction documents so I will post them here in case it helps anyone else...

I had to install Microsoft SDK Client (via the SDK.msi) onto the networked machine.
I also needed to copy across the SimConnect.ini  from my SDK folder to  Documents>Flight Simulator X Files on the main machine.
I then updated the Port number in the SimConnect.XML so that it was 5000 
I then created a SimConnect.cfg file on the networked machine and added in the IP address of the FSX machine.

It just remains to be seen if I have to change the IP address each time I log on, but we'll see what happens!

So looking forward to getting up in the air with Plan G working.. :-)

Hi All
I've had nothing but problems trying to connect via a network and after a day and a half wasted troubleshooting, I'm still no closer.

Both PCs are running Win7, both are connected to the Home Network and can see each other, but as soon as I press the Connect button, it waits for 2-3 seconds and then just crashes. The log appears to indicate the " SimConnect connection attempt timed out"

I have tried:

Turning off the firewall on both
Turning off the antivirus on both
I have 'pinged' both PCs and they can see each other fine
Used the automatic IP address
Re-set the FSX computer to a Static IP address (then changed it back to a dynamic one when Static didn't work)
Changed the Port from 4505 to 4506  to 4507 and 4508.. no joy
Tried setting up the SimConnect.XML as IPV6  AND IPV4  - (when I found that IPV6 wasn't working I re-wrote the SimConnect.xml to IPV4, but realised that each time I changed the details in the Location option on PlanG that it decided to keep reverting to the IPV6 settings so I had to uninstall PlanG, delete all the folders that were still on my HD, and cleared the registry... )
Tried all IPV6 and IPV4 versions of the 'Templates' included in the PlanG User Manual, to no avail
I managed to stop the software crashing by clicking the FSUIPC instead of SimConnect but then it just sat there doing nothing
I tried a 'Sim Connect config tool' but that made no difference

Below is my last Log and the XML  in case anyone has any bright ideas ??
Advice most welcome..
Regards
Minx

My Ips are: FSX machine 192.168.1.148 (dynamic)       PlanG machine: 192.168.1.149 (dynamic)

My Sim Connect .XML is:
<?xml version="1.0" encoding="Windows-1252"?>

<SimBase.Document Type="SimConnect" version="1,0">
  <Descr>SimConnect</Descr>
  <Filename>SimConnect.xml</Filename>
  <Disabled>False</Disabled>
<SimConnect.Comm>
    <Disabled>False</Disabled>
    <Protocol>Auto</Protocol>
    <Scope>global</Scope>
    <Address>192.168.1.148</Address>
    <MaxClients>64</MaxClients>
    <Port>4508</Port>
    <MaxRecvSize>4096</MaxRecvSize>
    <DisableNagle>False</DisableNagle>
  </SimConnect.Comm>
</SimBase.Document>


The error log is:
10:12:40.6

---===+++===---

10:12:40.8 Starting Plan-G (W7 edition), build 3.1.2.101
10:12:40.8 OS is Microsoft Windows NT 6.1.7601 Service Pack 1
10:12:42.9 InitDataFolder
10:12:43.0 Data Source = C:\Users\Home\Documents\Plan-G Files\Data\PlanG3_FSX.sdf
10:12:43.0 Data Source = C:\Users\Home\Documents\Plan-G Files\Data\PlanG3_FS9.sdf
10:12:43.0 Data Source = C:\Users\Home\Documents\Plan-G Files\Data\PlanG3_XPX.sdf
10:12:43.0 Data Source = C:\Users\Home\Documents\Plan-G Files\Data\PlanG3_P3D.sdf
10:12:43.0 Data Source = C:\Users\Home\Documents\Plan-G Files\Data\PlanG3_NAVI.sdf
10:12:43.0 Data Source = C:\Users\Home\Documents\Plan-G Files\Data\UserWaypoints.sdf
10:12:43.0 Data Source = C:\Users\Home\Documents\Plan-G Files\Data\MEF.sdf
10:12:47.7 Map tiles cache: C:\Users\Home\AppData\Local\GMap.NET\
10:12:49.2 Program in: C:\Program Files (x86)\Plan-G v3.1.2
10:12:49.2 Data in: C:\Users\Home\Documents\Plan-G Files
10:12:49.3 IsDataLoaded: FSX
10:12:49.3 Data Source = C:\Users\Home\Documents\Plan-G Files\Data\PlanG3_FSX.sdf
10:12:50.6 Starting timer
10:12:50.7 DownloadCurrentMetars thread started
10:12:50.8 Metar08Z.TXT started
10:12:50.8 sTAF06Z.TXT started
10:12:50.8 Metar09Z.TXT started
10:12:51.2 sTAF06Z.TXT done
10:12:51.2 lTAF06Z.TXT started
10:12:51.7 sTAF00Z.TXT started
10:12:51.7 lTAF06Z.TXT done
10:12:51.7 lTAF00Z.TXT started
10:12:51.8 sTAF00Z.TXT done
10:12:52.4 lTAF00Z.TXT done
10:12:52.7 IsDataLoaded: FSX
10:12:52.7 Data Source = C:\Users\Home\Documents\Plan-G Files\Data\PlanG3_FSX.sdf
10:12:52.8 IsDataLoaded: FS9
10:12:52.8 Data Source = C:\Users\Home\Documents\Plan-G Files\Data\PlanG3_FS9.sdf
10:12:53.0 IsDataLoaded: P3D
10:12:53.0 Data Source = C:\Users\Home\Documents\Plan-G Files\Data\PlanG3_P3D.sdf
10:12:53.3 IsDataLoaded: XPlane
10:12:53.3 Data Source = C:\Users\Home\Documents\Plan-G Files\Data\PlanG3_XPX.sdf
10:12:53.6 Metar09Z.TXT done
10:12:54.0 Metar08Z.TXT done
10:12:54.0 DownloadCurrentMetars done
10:12:54.3 Stopping timer
10:12:54.3 StartMap
10:12:54.5 Connection string: metadata=res://*/Data.FSData.csdl|res://*/Data.FSData.ssdl|res://*/Data.FSData.msl;provider=System.Data.SqlServerCe.3.5;provider connection string='Data Source=|DataDirectory|\Data\PlanG3_FSX.sdf'
10:12:55.6 ProcessMetars done
10:12:59.2 NdbsInBounds 12
10:12:59.7 VorsInBounds 12
10:13:00.5 AirportsInBounds 29
10:13:03.2 AirspaceInBounds 63
10:13:03.5 NdbsInBounds 12
10:13:03.5 VorsInBounds 12
10:13:03.5 AirportsInBounds 29
10:13:03.6 AirspaceInBounds 63
10:13:06.9 _Backstage_IsOpenChanged: True
10:13:34.6 _Backstage_IsOpenChanged: False
10:13:35.0 Cleanup
10:15:06.1

---===+++===---

10:15:06.1 Starting Plan-G (W7 edition), build 3.1.2.101
10:15:06.2 OS is Microsoft Windows NT 6.1.7601 Service Pack 1
10:15:06.3 InitDataFolder
10:15:06.3 Data Source = C:\Users\Home\Documents\Plan-G Files\Data\PlanG3_FSX.sdf
10:15:06.3 Data Source = C:\Users\Home\Documents\Plan-G Files\Data\PlanG3_FS9.sdf
10:15:06.3 Data Source = C:\Users\Home\Documents\Plan-G Files\Data\PlanG3_XPX.sdf
10:15:06.3 Data Source = C:\Users\Home\Documents\Plan-G Files\Data\PlanG3_P3D.sdf
10:15:06.3 Data Source = C:\Users\Home\Documents\Plan-G Files\Data\PlanG3_NAVI.sdf
10:15:06.3 Data Source = C:\Users\Home\Documents\Plan-G Files\Data\UserWaypoints.sdf
10:15:06.3 Data Source = C:\Users\Home\Documents\Plan-G Files\Data\MEF.sdf
10:15:07.2 Map tiles cache: C:\Users\Home\AppData\Local\GMap.NET\
10:15:07.4 Program in: C:\Program Files (x86)\Plan-G v3.1.2
10:15:07.4 Data in: C:\Users\Home\Documents\Plan-G Files
10:15:07.4 IsDataLoaded: FSX
10:15:07.4 Data Source = C:\Users\Home\Documents\Plan-G Files\Data\PlanG3_FSX.sdf
10:15:07.5 Starting timer
10:15:07.5 DownloadCurrentMetars thread started
10:15:07.5 Metar08Z.TXT started
10:15:07.5 Metar09Z.TXT started
10:15:07.5 sTAF06Z.TXT started
10:15:07.7 sTAF06Z.TXT done
10:15:07.7 lTAF06Z.TXT started
10:15:08.3 lTAF06Z.TXT done
10:15:08.3 sTAF00Z.TXT started
10:15:08.3 sTAF00Z.TXT done
10:15:08.3 lTAF00Z.TXT started
10:15:08.9 lTAF00Z.TXT done
10:15:09.1 IsDataLoaded: FSX
10:15:09.1 Data Source = C:\Users\Home\Documents\Plan-G Files\Data\PlanG3_FSX.sdf
10:15:09.2 IsDataLoaded: FS9
10:15:09.2 Data Source = C:\Users\Home\Documents\Plan-G Files\Data\PlanG3_FS9.sdf
10:15:09.2 IsDataLoaded: P3D
10:15:09.2 Data Source = C:\Users\Home\Documents\Plan-G Files\Data\PlanG3_P3D.sdf
10:15:09.2 IsDataLoaded: XPlane
10:15:09.2 Data Source = C:\Users\Home\Documents\Plan-G Files\Data\PlanG3_XPX.sdf
10:15:10.0 Metar08Z.TXT done
10:15:10.0 Stopping timer
10:15:10.0 StartMap
10:15:10.0 Connection string: metadata=res://*/Data.FSData.csdl|res://*/Data.FSData.ssdl|res://*/Data.FSData.msl;provider=System.Data.SqlServerCe.3.5;provider connection string='Data Source=|DataDirectory|\Data\PlanG3_FSX.sdf'
10:15:10.4 NdbsInBounds 14
10:15:10.5 VorsInBounds 14
10:15:10.9 AirportsInBounds 32
10:15:11.7 AirspaceInBounds 71
10:15:11.7 NdbsInBounds 14
10:15:11.7 VorsInBounds 14
10:15:11.8 AirportsInBounds 32
10:15:11.9 AirspaceInBounds 71
10:15:12.7 Metar09Z.TXT done
10:15:12.8 DownloadCurrentMetars done
10:15:14.0 ProcessMetars done
10:15:15.5 _Backstage_IsOpenChanged: True
10:16:01.0 _Backstage_IsOpenChanged: False
10:16:04.4 _Backstage_IsOpenChanged: True
10:16:16.6 _Backstage_IsOpenChanged: False
10:16:18.4 Initiating FSUIPC/XPUIPC connection.
10:16:18.5 FSUIPC/XPUIPC.Connect
10:16:18.6 Connect: FSUIPC.FSUIPCException: FSUIPC Error #2: FSUIPC_ERR_NOFS. Cannot find FSUIPC or WideFS running on this machine.
   at FSUIPC.FSUIPCConnection.Open(Byte ClassInstance, FlightSim RequiredFlightSimVersion)
   at Plan_G3.Model.MyFSUIPC.Connect()
10:16:18.7 SetFSConnected: System.NullReferenceException: Object reference not set to an instance of an object.
   at Plan_G3.Model.MyFSUIPC.Disconnect()
   at Plan_G3.Model.MyFSUIPC.Connect()
   at Plan_G3.ViewModel.MainViewModel.SetFSConnected(Boolean value)
10:16:50.2 NdbsInBounds 19
10:16:50.3 VorsInBounds 18
10:16:50.5 AirportsInBounds 41
10:16:51.0 AirspaceInBounds 82
10:16:52.1 NdbsInBounds 11
10:16:52.2 VorsInBounds 8
10:16:52.3 AirportsInBounds 28
10:16:52.6 AirspaceInBounds 79
10:17:17.1 NdbsInBounds 17
10:17:17.2 VorsInBounds 19
10:17:17.2 AirportsInBounds 39
10:17:17.4 AirspaceInBounds 79
10:19:00.3 _Backstage_IsOpenChanged: True
10:19:12.4 _Backstage_IsOpenChanged: False
10:19:23.9 Cleanup
10:19:36.3

---===+++===---

10:19:36.3 Starting Plan-G (W7 edition), build 3.1.2.101
10:19:36.3 OS is Microsoft Windows NT 6.1.7601 Service Pack 1
10:19:36.5 InitDataFolder
10:19:36.5 Data Source = C:\Users\Home\Documents\Plan-G Files\Data\PlanG3_FSX.sdf
10:19:36.5 Data Source = C:\Users\Home\Documents\Plan-G Files\Data\PlanG3_FS9.sdf
10:19:36.5 Data Source = C:\Users\Home\Documents\Plan-G Files\Data\PlanG3_XPX.sdf
10:19:36.5 Data Source = C:\Users\Home\Documents\Plan-G Files\Data\PlanG3_P3D.sdf
10:19:36.5 Data Source = C:\Users\Home\Documents\Plan-G Files\Data\PlanG3_NAVI.sdf
10:19:36.5 Data Source = C:\Users\Home\Documents\Plan-G Files\Data\UserWaypoints.sdf
10:19:36.5 Data Source = C:\Users\Home\Documents\Plan-G Files\Data\MEF.sdf
10:19:37.4 Map tiles cache: C:\Users\Home\AppData\Local\GMap.NET\
10:19:37.6 Program in: C:\Program Files (x86)\Plan-G v3.1.2
10:19:37.6 Data in: C:\Users\Home\Documents\Plan-G Files
10:19:37.6 IsDataLoaded: FSX
10:19:37.6 Data Source = C:\Users\Home\Documents\Plan-G Files\Data\PlanG3_FSX.sdf
10:19:37.7 Starting timer
10:19:37.7 DownloadCurrentMetars thread started
10:19:37.7 Metar08Z.TXT started
10:19:37.7 Metar09Z.TXT started
10:19:37.7 sTAF06Z.TXT started
10:19:37.9 sTAF06Z.TXT done
10:19:37.9 lTAF06Z.TXT started
10:19:38.4 lTAF06Z.TXT done
10:19:38.4 sTAF00Z.TXT started
10:19:38.5 sTAF00Z.TXT done
10:19:38.5 lTAF00Z.TXT started
10:19:38.9 IsDataLoaded: FSX
10:19:38.9 Data Source = C:\Users\Home\Documents\Plan-G Files\Data\PlanG3_FSX.sdf
10:19:38.9 IsDataLoaded: FS9
10:19:38.9 Data Source = C:\Users\Home\Documents\Plan-G Files\Data\PlanG3_FS9.sdf
10:19:38.9 IsDataLoaded: P3D
10:19:38.9 Data Source = C:\Users\Home\Documents\Plan-G Files\Data\PlanG3_P3D.sdf
10:19:38.9 IsDataLoaded: XPlane
10:19:38.9 Data Source = C:\Users\Home\Documents\Plan-G Files\Data\PlanG3_XPX.sdf
10:19:39.1 lTAF00Z.TXT done
10:19:40.0 Metar09Z.TXT done
10:19:40.1 Metar08Z.TXT done
10:19:40.1 DownloadCurrentMetars done
10:19:40.2 Stopping timer
10:19:40.2 StartMap
10:19:40.2 Connection string: metadata=res://*/Data.FSData.csdl|res://*/Data.FSData.ssdl|res://*/Data.FSData.msl;provider=System.Data.SqlServerCe.3.5;provider connection string='Data Source=|DataDirectory|\Data\PlanG3_FSX.sdf'
10:19:40.7 NdbsInBounds 17
10:19:40.8 VorsInBounds 19
10:19:41.4 AirportsInBounds 39
10:19:41.5 ProcessMetars done
10:19:42.2 AirspaceInBounds 79
10:19:42.3 NdbsInBounds 17
10:19:42.3 VorsInBounds 19
10:19:42.3 AirportsInBounds 39
10:19:42.4 AirspaceInBounds 79
10:19:46.5 _Backstage_IsOpenChanged: True
10:19:54.1 _Backstage_IsOpenChanged: False
10:19:55.6 Initiating SimConnect connection.
10:19:55.6 Connect
10:19:55.6 SimConnect.Connect - Remote. Mode = IPv4 Server = 192.168.1.146 Port = 4508
10:20:00.6 SimConnect connection attempt timed out
10:20:00.6 Disconnect
10:20:01.7 Disconnected from sim