i've a message error
i've a message error too
I am guessing you get the same error in both cases and it matches that posted by Filax. I am also guessing that the issue is with the space in your case and the '.' in Filax's. There was a recommendation *NOT* to install in Program Files at one point but that might have been dropped. I changed mine as it caused problems with HotDocs.
If you can be bothered, install BlitzMax to a path without spaces, fullstops of whatever and see what happens with HydraMax.