the problem is in the deploypath attribute of the module.xml file

[SergeyMi37]

the problem is in the deploypath attribute of the module.xml file
If in the file DeployPath="${cspdir}"
...

Installing cleans up the csp directory. The system portal is broken.

[isc-tleavitt]

There should be restrictions on DeployPath to avoid this outcome.

[isc-tleavitt]

#278 is related, as part of the best-practice alternative - just reference the package install directory instead.