We have an app that adds functions to Word (Wordtricks if anyone is familiar with it.) On my Citrix server it isn't working. The developer wrote a test app, and it comes back with Debug 4 Err=91 Object variable or With block variable not set. After a minute or two a Run-time 430 Class does not support Automation or does not support expected interface. The developer is at a loss, he thinks it is a problem with Windows, and a OS reinstall the only option. I've reloaded MDAC, Jet, Windows Scripting engine, but can't figure out these errors. Anyone have any suggestions? NOTICE: This electronic mail transmission from the law firm of Dinsmore & Shohl may constitute an attorney-client communication that is privileged at law. It is not intended for transmission to, or receipt by, any unauthorized persons. If you have received this electronic mail transmission in error, please delete it from your system without copying it, and notify the sender by reply e-mail, so that our address record can be corrected.