I was editing my mapping and source definitions and made a few errors. I corrected them and resaved the configuration to Penrose; however, when I selected preview, the preview browser would sometimes not open. I restarted the server and checked the logs and noticed the error below. I also noticed an error earlier in my logs stating a source name was invalid. That source name did not exist in my penrose studio configuration - I had renamed it previously to a new name. Ultimately, I had to delete my configuration files and revert back to the defaults and then reimport my configuration on the studio side from a local backup to get the server working correctly again.

Two areas where I was making changes: renamed a database connection source, modifying mapping expressions. I had made numerous changes always saving the change each time and previewing it in the browser.

Discussion thread: http://groups.google.com/group/safehaus/browse_thread/thread/1ce6572860c91b25/9c220cd88c4fddff#9c220cd88c4fddff

Exception in thread "main" bsh.TokenMgrError: Lexical error at line 4, 
column 31.  Encountered: "i" (105), after : "'d" 
        at bsh.ParserTokenManager.getNextToken(Unknown Source) 
        at bsh.Parser.getNextToken(Unknown Source) 
        at 
org.safehaus.penrose.interpreter.DefaultInterpreter.parseVariables(DefaultI