Install the latest .NET from Microsoft.
This will resolve the problem.
From the trouble shooting section on EQ2Maps:
http://maps.eq2interface.com/index.php?action=faq#135
The application failed to initialize properly (0x0000135) You must have The Microsoft .Net Framework 1.1 or greater for this program to run. The Microsoft .Net Framework 1.1 can be downloaded either from this
direct download link or if you prefer you can get it from
windows update.