scons
scons: Reading SConscript files …
scons: done reading SConscript files.
scons: Building targets …
scons: * [SConstruct] ValueError : unsupported pickle protocol: 4
scons: building terminated because of errors.

The reason for this is probably that the python version is different.

You can find out. I am working on an awtk project. I run it on PC and copy it to Ubuntu. This is the reason for compilation.

Solution:

Delete the .sconsign.dblite file in the root directory of your project.