Hi lunminliang,
There were some messages with the logging enabled but they gave me no indication of what was wrong.
Anyway, I figured it out. I had an evaluation copy of CodeWarrior I was using and I bought the full version but I never obtained the license file because the eval version was working okay. The eval version must have expired over the weekend. I went to the "Secure Applications", "Software Licensing" and obtained the license.dat file and put that in Freescale/CodeWarrior/../PA. Apparently, when the evaluation license expires this Empty Text error must occur when trying to debug. I can now use Run->Debug Configurations.
Frank