Unable to cast object of type 'Quest.Toad.DatabaseBrowser.BrowserSettings' to type 'Quest.Toad.Or (4266365)

I open TDA. I connect to database. I attempt to open sql code.
I received the following error message:

RESOLUTION 1

1) Fully exit Toad for Data Analysts (TDA)
2) Go to C:\Documents and Settings\<username>\Application Data\Quest Software\Toad for Data Analysts X.x\ModuleSettings (for XP) or
C:\Users\<username>\AppData\Roaming\Quest Software\Toad for Data Analysts X.x\ModuleSettings (for Vista or Win 7)
3) Rename DBMSOutput.xml to DBMSOutput.xml_old
4) Start TDA and re-test the issue

RESOLUTION 2

1) Fully exit Toad for Data Analysts (TDA)
2) Go to C:\Documents and Settings\<username>\Application Data\Quest Software (for XP) or
C:\Users\<username>\AppData\Roaming\Quest Software (for Vista or Win 7)
3) Rename the "Toad for Data Analyst X.x" folder to "Toad for Data Analyst X.x_OLD"
4) Start TDA and re-test the issue