# Error: Error opening table for feature source

## Error Message

This error occurs when opening an MS-DOS ARCUSA project file from the CD-ROM on a Windows 95 machine:

"Error opening table for feature source."

## Cause

The ADHOME environment variable is incorrectly set.

If the ADHOME environment variable was set to SET ADHOME = E:\, Windows 95 will add an extra backslash to the path. The extra backslash will cause problems when trying to open the project. You may see a 'where is' message pointing to e:\\arcusa\arcusa_d\usa_25m\st_25m_arc. The two backslashes will indicate that there is a problem with the ADHOME environment variable.

## Solution or Workaround

Reset the ADHOME environment variable as SET ADHOME = E:

For help with setting a system environment variable, see: How To: Edit an environment variable.