Problem:

Having installed Mainframe Express you may encounter this error message.  If so, please follow the steps in the resolution below.

Resolution:

The easiest and most efficient way is to uninstall and delete everything from the registry and then reinstall.

Otherwise you can edit the paths (for the system, tutorial and maintain locations) by using a hex editor so that they point to the true locations.  However, this is somewhat dangerous as it can corrupt the XDB Server locations if done incorrectly.  A hex editor is essential.

The problem only occurred in Mainframe Express 2.5 and was later resolved in version 3.0.