Catastrophic failures when attempting Log.AppendFolder("message")

Windows 10, TestComplete 12.60 Hi, Having a terrible time with TestComplete 12.60 64-bit and 64-bit ODBC connection. I have confirmed that I'm using the 64-bit ODBC connectivity. When I start TC, the script (to create a connection, open a connection, run a select statement, and then close the connection) runs fine. But when I try to run the script a second time, TC reports a "catastrophic failure". I have to close TC, and then restart TC, in order to successfully run the script again. Further, the script can successfully create, open, select, and close 3 times and succeed. But if I try rerunning, catastrophic failure. I can even use the project test items to run the script 3 times, each run opening, selecting, closing three times, to success. But if I try rerunning, catastrophic failure. BTW, the 32-bit scenario works fine and always did. Thanks, in advance, for your help.