Accpac / VB.Net Express / 64 Bit OS

[msecretan]

I have used VB.Net to create a program to insert timecards into US and Canadian payroll in ACCPAC version 5.5. The process runs quite well on 32 bit machines but as soon as I run the process on a 64 bit server I get the following error:

Unable to cast COM object of type 'AccpacCOMAPI.AccpacSessionClass' to interface type 'AccpacCOMAPI.IAccpacSession'. This operation has failed because the QueryInterface call on the COM component for the interface with IID '{B3B13603-A675-11D2-9B95-00104B71EB3F}' failed due to the following error: Class not registered.

I am running all the same program files on the server with all the current updates to all the modules in Accpac. Any help with this error would be appreciated.

 

[Jay Converse]

You probably need to compile your executable in 32-bit mode, since the COMAPI is 32-bit.

 

[DjangMan]

Mr. Secretan! How's it going?

What IDE did you use to create your application? VS 2010? 2008, 2005?