Hmmm. XP SP3 here - perhaps this makes a difference, but intuitively I can't help feeling that there should be an ivap.ini on the main FSX PC as well as on the laptop running the IvAp interface. I have now re-installed IvAp on the laptop and hope to have an opportunity over the weekend to try a test session to see I can get it working again. Mike L On 15 June 2012 17:27, e-mail algy.mcintyre <algy.mcintyre@xxxxxxxxxxxx>wrote: > Hi Mike > > Using Windows 7 > > C:\Users\YourName\AppData\Roaming\IVAO\Ivap\Config\ivap.ini > > *Alastair * > > > > On 15 June 2012 16:47, Mike Lucas <mhlucas@xxxxxxxxx> wrote: > >> Thanks Al. I'm puzzled by the absence of an ivap.ini file on my main >> (FS) PC. How has it been communicating with my laptop (successfully) for >> so long without one? Where is this file located? - in your IvAp v2 folder? >> >> Mike L >> >> >> On 15 June 2012 16:03, e-mail algy.mcintyre >> <algy.mcintyre@xxxxxxxxxxxx>wrote: >> >>> Hi Mike >>> >>> Here is my IVAP.ini for the 'FLYING PC' (FSX) >>> >>> >>> >> > > > -- > * > * > >