Alright, I've finally decided that OP2Mapper is in a stable enough state to release as an alpha (So I think).
It can't create new maps from scratch yet, and doesn't have a few features like undo, but it should still be several steps ahead of the current mapper.
This is an ALPHA version, meaning it could crash at any time. Backup your map files often, and save often. (It's unlikely that it would corrupt the map file, but you never know).
To run the mapper you MUST have an installed working copy of OP2 installed. (Well, maps.vol actually. This version reads the tileset data directly instead of the mapper's own cache so it should be more reliable).
You also must have the VB6 runtime (comes with OP2, as msvbvm60.dll, and most computers probably have this file in their system folder. If the editor gives a specific error about this file, you don't have it. Copy it into the mapper folder).
After extracting the zip file, you need to run mappersetup.bat to complete the installation. Failure to do this will result in the program failing with a bunch of runtime errors.
If at any point you need to uninstall the Mapper, run mapperremove.bat. This will unregister all the modules mappersetup.bat registered, and delete the program executable.
If you get any crashes, run time errors, or Application shell errors, please tell me, and provide as much information as you can (like the actual error message / number, and what you were trying to do when it happened).
I, nor anyone else at OPU, can take any responsibility if this program ends up corrupting the map file you spent 10 hours on, or anything else on your computer. Use at your own risk, backup often, save often, and you should be fine.
To download the Mapper:
Go HerePlease read the above if you haven't, or you're gonna get strange errors when you try to run!-- op2hacker