Micro Focus Visual COBOL 2.3 Update 1 for Eclipse (UNIX) > Welcome > Product Information > Known Issues and Restrictions > Compatibility > Coexisting with earlier Micro Focus products

Coexisting with earlier Micro Focus products

Run-time system error due to COBCONFIG

A run-time system error occurs if the COBCONFIG environment variable is set when you run Visual COBOL applications or when you use Visual COBOL to edit or create projects and the configuration file it refers to contains entries that are not valid for Visual COBOL.

For example, this might happen if you have Studio Enterprise Edition installed and COBCONFIG is set for it.

To work around this issue, ensure that Visual COBOL is not running and then modify the configuration file by doing one of the following:

If the invalid tunable is not needed by another application, remove it from the run-time configuration file.
Add the following as the first line in the configuration file:
```
set cobconfig_error_report=false
```
Unset COBCONFIG or set it to another configuration file that does not contain the invalid tunable for the particular session you are running in.

Performance Monitoring Issue: Having an Enterprise Developer product and Studio Enterprise Edition 6.0 or Server Enterprise Edition 6.0 installed on the same machine, and trying to uninstall one of them, breaks performance monitoring and it is not possible to see the Enterprise Server performance counters. To resolve this problem, run the installer of the product you wish to retain on your machine, and repair the installation.