Hi Matt,
Sorry for the delay, I have been out of town on business for the past week.
I just tested installing the trial version on a different machine and then dropping in the visa.dw6 file and was able to successfully add the visa driver. Looking into code, the only reason it would give the message “Unable to add Driver” is if it can’t find the visa.dw6 file. Can you confirm you unzipped the provided file and then dropped the visa.dw6 file into the HTBasic 2021 Trial folder? For example i pasted the visa.dw6 file into my “C:\Program Files (x86)\HTBasic 2021 Trial” folder.
Thanks,
Pat
