Used Versions:
TESSY V4.3.10
TASKING TriCore v6.3r1

Extract the archive, keep folder structure, import the example project via the .pdbx file into your TESSY project list.
Once you load the project you will be asked to restore the database, confirm this.
Open the TEE and inspect the attribute 'Compiler Install Path'.
If it does not match your own local installation of TASKING Compiler adjust it accordingly.

Please read our application notes about TASKING carefully:
https://www.razorcat.com/files/files/tessy/matrix/doc/Compiler/021-Tasking-Compiler.pdf
https://www.razorcat.com/files/files/tessy/matrix/doc/Targets/074-Using-TASKING-Script-Debugger.pdf