When the Pegasus version being used is x.y.z and the pegasus::worker transformation is overridden with a custom worker package, which when uncompressed creates a folder with a different name like a.b.c or another custom name, then Pegasus lite is unable to locate executables in the worker package. The Pegasus lite expects the executable to be in a folder named x.y.z even when a custom worker package is used.

https://pegasus.isi.edu/documentation/user-guide/data-transfers.html#staging-of-worker-package