The PSR files are actually and export of the DataWindow object's source code and its data into a textual format. Due to including the DW source code - the PSR recipient must be of the same vintage as the creator. That is, a PB 10 PSR is not compatible with IM 2017 and an IM2017 PSR is not compatible with PB 10. You have to use the same version of IM / PB for the PSR's to work 100%. In the future, that would mean using IM2018 & PB 2018 together as well.
Regards ... Chris