Hi Damy
I suggest couple of things:
1) Check your Evaluation Paths! Align them with the ones used in the programs which should be run. (/MRSS/SGE_PN_MNT and /MRSS/HCM_RPTWFMIF). Most of my issues were caused by the wrong/missing evaluation paths.
2) I am sure that you may find the required content here: SAP Multiresource Scheduling 9.0 – SAP Help Portal Page
And especially here you will find some very valuable information: https://websmp206.sap-ag.de/~form/sapnet?_SHORTKEY=01100035870000763490&_SCENARIO=01100035870000000202&
You will need an OSS user id in order to access the latter one.
I hope this will work.
Regards
Savas