cannot create New pset or add dgns to exisiting shared pset made by other users through Print Organiser

We have logged a service request [7000789496] already but maybe some users have encountered this and have a solution already...

We are using  Mstn V8i SS3  we dont have   Pwise. We all the same pcs with 16Gb Ram and core  i7 cpus so its not about  memory or pc power or graphic cards...

Most of us at my  work  can not create a  new pset or add files extra dgns to existing shared psets on network made by  other user.

When I try to use print organiser, or try to add a file or files to create a pset  I get the  following error and no files are added to pset and no pset created, I can use existing psets created by others  but can not add extra dgns to them same error pops.. this is  happening to 3 out of the 4 users we have tried

...only one user is working error free and they are the only  one able to create new psets with PO...

However Manual printing no problems....here is picture of the error.. we get..     error is  Exception encountered inside .WorkerMicrostationProxy.LoadDesignFile