In most cases, this error message appears due to a missing Microsoft Windows component (VC Redist). The setup of pCon.planner contains this component but in some cases, it is not installed automatically. You can install these files manually after the installation of pCon.planner.
The latest version of our software (8.7 update 1) does not work on Windows 7 anymore, therefore the manual installation of the vcredist component won't solve the issue in this case.
The files can be downloaded here:
Note: pCon.planner x64 needs both files
VC Redist x86 14