run-time error '3024'

All of a sudden one of our tablet PC's began to give an error "Run-time error '3024': Couldn't find file c:\medialab\temp.mdb." when we try to run certain single experiments. Some work just fine and some don't. Even stranger is that if the whole experiment is run all seems fine.

We are using ML 2004.3.14

Thanks

Nancy Brodsky

Sorry if this is too obvious a question, but does that file exist? Also--are the .[I]exp[/I] and .[I]que[/I] files located in the same folder?