When trying to run
the Digital Wrench, one of the following error messages is reported:
error '91': Object variable or With block variable not set
This error is caused
when the Digital Wrench communications layer is left in the computer's
memory after the Digital Wrench itself has been shutdown. This can happen
when there are communications errors when the program is started.
Read the article titled
Killing the CommServer for instructions
on how to get rid of the communications layer.