I had this same error with 32-bit Outlook 2010 on Windows 7 64-bit. And while searching for a fix came to this post so even though it is an old post I thought I should post the solution that worked in my case. I resolved by clearing the custom forms cache.
In Outlook open File > Options > Advanced Under Developers section choose Custom Forms; then Manage Forms Click the Clear Cache button
Maffy1
23 Posts
0
May 11th, 2011 11:00
Hi
Yes, I installed the 64 bit Offline Access client on Win7 x64. Office 2010 is of course also 64bit.
Thorleif
Gary_Reardon
2 Intern
•
272 Posts
0
May 11th, 2011 11:00
Did you install then32 or 64 bit version of the client on the 64 bit os?
Keep in mind the 64 bit version of the client is for the 64 bit version of Outlook
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colufson
1 Message
0
December 21st, 2011 10:00
I had this same error with 32-bit Outlook 2010 on Windows 7 64-bit. And while searching for a fix came to this post so even though it is an old post I thought I should post the solution that worked in my case. I resolved by clearing the custom forms cache.
In Outlook open File > Options > Advanced
Under Developers section choose Custom Forms; then Manage Forms
Click the Clear Cache button