Hello and welcome to the Microsoft Community
According to your description, your computer reports an error after opening Radiant Black's 3D Map Editor
I have seen your error message, the error program is Radiant_modtools.exe.
The program in question is Radiant_modtools.exe, as it is a third-party program, you can try contacting the support staff of the program to help you resolve the issue.
Your computer prompts about OLEAUT32.dll error, you can try to see if your computer can find the file (usually system system directory or put the software to the same level directory)
You can download the file on the Internet, you can download the file can be placed in the original folder, replace the old (usually the system system directory or placed in the same level of the software directory) file
In addition, you can try to repair the system commands to see if your computer is missing some files, or generated by the error!
- Search for CMD, find the command prompt, and choose to run in administrator mode.
- Enter the following commands one by one, and be sure to complete the previous command before executing the next one.
DISM /Online /Cleanup-Image /ScanHealth
DISM /Online /Cleanup-Image /CheckHealth
DISM /Online /Cleanup-Image /RestoreHealth
SFC /Scannow
- After the scan is complete, you can check the scanning information to see if the problem has been detected and fixed.
I hope the above information is helpful to you, if you have any questions feel free to contact me
Kirito|Microsoft Community Support Specialist