I just updated the release to GROG 2.7b. Please download this new version and give it a go!

• Fixed "Parameter format not correct" errors on DOS 5.x - 6.x by removing unnecessary quotes from generated batch commands.
• Fixed "Garbage Data" in batch files on DOS 5.x - 6.x. The launcher now intelligently detects the OS version and skips incompatible DOS 7.x API calls that were causing memory leaks into the script.
• The launcher now generates a `_RUN.BAK` file alongside the standard launch script. This backup persists after the game exits, allowing you to inspect exactly what commands were sent to DOS.

Download: https://codeberg.org/jjmarcos/grog/releases

I did some quick testing using MS-DOS 5.00 running in a QEMU emulated machine, and the modifications seem to have worked!
@Boohyaka, if you still see any issues take a look at the _run.bak file to see exactly what tried to launch. Let me know your findings!

Shagittarius wrote on Yesterday, 20:02:

I use 7.1 as well so I never noticed that either. Glad to people checking it out, I never know how my configs might change in the future!
So I've been using it for quite a while and I only have one issue and a bunch of suggestions:
[...]

As always, I appreciate the feedback! I didn't have the time today and I'll be quite busy next week, but hopefully I can dedicate some time to go through your suggestions soon. Keep the them coming!