This message can occure when you press OK in the Data Import Screen after making the correct sellections. This message seems strange, because the gui-fin.pl is in the correct path.

The reason for this message is that in the Propath of the Exact.pro (a file you can find in the working directory of Exact Financials C/S) a "." is missing or not in front of the Propath. The beginning of your Propath must look like this: