Run-Time Error R6025 - pure virtual function call:
"No object has been instantiated to handle the pure virtual function call. This error is caused by calling a virtual function in an abstract base class through a pointer that is created by a castto the type of the derived class, but is actually a pointer to the base class. This can occur when casting from a void* to a pointer to a class when the void* was created during the construction of the base class."
I've seen references to this error, but none with Office. I have, however, seen it related to Microsoft Money program.
Microsoft article Q240437.
http://support.microsoft.com/default.aspx?scid=kb;EN-US;q240437
If you do have Money loaded on the computer, perhaps the relationship is in that they are both Microsoft products sharing the same file(s). If not, perhaps that article will still provide a clue.
Here's a different reference to that error as it relates to Microsoft Visual C+:
http://knowledge.meetingmaker.com/Support/mmxp.nsf/31af51e08bcc93eb852565a90056138b/558e64cd7ddfb749852568cc005385c2?OpenDocument
Another option, according to this article:
http://www.zipform.com/support/zipform5Faq.asp#26
This error happens if you are using "NetZero" as your Internet Service Provider and have an active open connection to the internet. To solve this problem, you will need to disconnect from the internet when using ZipForm 5.0. While ZipForm 5.0 does not utilize anything in common with NetZero, the problem is most likely the result of something conflicting in memory. ZipForm 5.0 does not require you to be connected to the internet to run the program. Software & Form updates can still be downloaded and installed from the ZipForm website as installing software and forms updates requires the ZipForm 5.0 program to be closed.
(Don't forget to REMOVE those pesky SPACES from the pasted URLs.)
Good luck,
Maxxwell