Switch Workspace usually fails

When I try File > Switch Workspace, it usually (though not always) fails: Instead of just closing the existing workspace, M2MStudio seems to exit completely.

Is there a trick to this?

On WinXP-Pro + SP3.

Already seen: seems to be linked to a Selima crash when closing the application (since workspace switching implies closing the application to reopen it on the new workspace).
Will be hopefully fixed with new Target Management.

Already noted: shouldn’t be starting Selima until it’s actually needed: M2Mstudio hogs the COM port even when not connected! - #10 by Madouc