Micro Focus Studio Enterprise Edition Test Server > Getting Started > Product Information > Known Errors and Restrictions > Compatibility > Co-existing with Earlier Micro Focus Products

Co-existing with Earlier Micro Focus Products

Run-time system error due to COBCONFIG

A run-time system error occurs if either the COBCONFIG or COBCONFIG_ environment variable is set when you run aStudio Enterprise Edition application or when you use Studio Enterprise Edition to edit or create projects and the configuration file it refers to contains entries that are not valid for Studio Enterprise Edition.

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

To work around this issue, ensure that Studio Enterprise Edition 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 COBCONFIG_) or set it to another configuration file that does not contain the invalid tunable for the particular session you are running in.

Licensing error due to environment settings

The message "Micro Focus License Manager service is not running" can occur when you invoke a Net Express, Mainframe Express or Studio Enterprise Edition utility from Studio Enterprise Edition. This happens when the tool is invoked with Studio Enterprise Edition environment settings while it requires the Net Express or Studio Enterprise Edition ones.

This happens when you edit files such as .dat that have a file association with Net Express or Studio Enterprise Edition. This can also happen when invoking a utility within the Net Express or Studio Enterprise Edition products as an external tool from Studio Enterprise Edition.

You can workaround this problem in Studio Enterprise Edition as follows:

Create a batch file that unsets COBREG_PARSED before the tool is invoked. The batch file contains:
```
Set COBREG_PARSED=
Call [PathToUtility] %1
```
Where PathToUtility is the path to the Net Express or Studio Enterprise Edition utility.
In the Visual Studio IDE, add the batch file instead of the utility itself as an external tool.
This ensures that the proper environment is established when running that tool.