Ok, we have two different problems here:

1. After the update, the techdemo issues error messages.

The update updates the techdemo main script, but not its included scripts. We've included the complete techdemo scripts in the template update. Download and unzip the template update from our download page into your Gamestudio folder. It overwrites scripts in the template_6 folder and in the work folder.

2. I can not run my level without script.

The reason for this is unknown, as all other people obviously can run a level without script. You might contact the support about that, but a possible reason is that your level has no content. Try running an included level, like techdemo.wmb, without script: acknex.exe work\techdemo.wmb -diag. Check whether this works. If not, please let us know here and post the acklog.