Ok thanks a lot for replying.
Some further things to add (so you'll know where I'm coming from):
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I've upgraded to VS 2005 and I have InfoPath 2003 (SP2) installed. I have previously created .ipproj in solutions using VS 2003.NET with the InfoPath 2003 Toolkit for VS.NET. I have about 5 different forms that were working fine with VS.NET and the Infopath Toolkit for VS.NET. Now (since the upgrade to VS 2005) these projects will not open in VS 2005 and the Infopath Toolkit for VS.NET will not install with SP2 of InfoPath.
I can only find a link on your homepage to the Infopath 2003 Toolkit for VS.NET not for VS 2005?
There is also only a link to the SE version of VSTO 2005 which is different to the VSTO 2005 (also dfferent to the vstor.exe runtime installation although also confusing the issue here because of similar naming).
So maybe Microsoft has overlooked something here? How do I open my .ipproj solutions using VS 2005 when there is no .ipproj template available in VS 2005?
It seems that the VSTO 2005 is just for Add-ins for Office 2003 and Office 2007 - VSTO 2005 does not seem to add the .ipproj template to VS 2005.
Thanks for any help as I am completely stuck on this and cannot find any help directly from Microsoft.