Dennis the chances are that the old XLC version has not been un-installed and you somehow are starting up version 01_08 which is now expired. To un-install the old version go to the windows start button and select:
All Programs>XLC>un-install XLC

To double check it has been un-installed see that XLC.dll and XLc.xll are removed from the install directory (normally C:\program files\XLC). Download XLC version 03_08 and install.

If this did not work I am perplexed but all the updating process does is replace an old version of XLC.dll with a new version of XLC.dll. The zip file you download for XLC version 03_08 includes the latest copy of XLC.dll so you can always update the old copy with a simple copy paste.

I hope this gets you going again Dennis. Let me know if you have any more troubles.