IBM Support

Opening a Rational Method Composer Work Product element: "Could not open the editor"

Technote (troubleshooting)


Attempts to open a Work Product element with IBM Rational Method Composer (RMC) result in "Could not open the editor" error.


RMC returns the following error.

Could not open the editor: org.eclipse.epf.uma.impl.ContentDescriptionImpl incompatible with org.eclipse.epf.uma.impl.WorkProductDescription


Data corruption in the RMC Workspace.

Resolving the problem


Rename the RMC Workspace.


  • Do not delete the workspace, but rename it.
  • Make a backup for safety.

The RMC tool will recreate this workspace as soon as the tool opens the library again. If you saved the library in this workspace. make a backup of that library.

Steps to rename the Workspace

  1. Close RMC.

  2. Navigate to C:\Documents and Settings\<USER>\IBM\RMC .

  3. Rename the workspace.752 folder to workspace.752.backup for RMC 7.5.2.

  4. Start RMC.

The tool should now load properly.

Document information

More support for: Rational Method Composer

Software version: 7.5.2

Operating system(s): Windows

Reference #: 1621297

Modified date: 2012-12-28