When official tools are unavailable or fail, the reverse engineering community has developed several utilities. These are more reliable for older or oddly packaged ThinApp versions.
UniExtract is a legendary tool in the IT community designed to extract files from any type of installer or archive. It supports a vast array of formats, including NSIS, Inno Setup, and yes, VMware ThinApp. Thinapp Archive Unpack
If the ThinApp package is running, you can extract its contents from memory: When official tools are unavailable or fail, the
To rebuild a ThinApp project:
python thinapp_unpack.py -i package.dat -o ./unpacked Thinapp Archive Unpack