This error is occured when running parallel simultions in the task list . This is related to the size of the results file having a large model.
There are few options you can use to track down the error in Parallel Simulation Manager. They are mentioned below-
1. In your task list try selecting them one at a time and choose Download to see if it works manually.
2 .If that doesn't work, the results from Tasks are found here: C:\ProgramData\ies\tasks.
3. There should be APS files in there you can copy into your Vista folder for the project.
4. If all else fails then you can try switching to legacy simulation mode and re-run it the old way (Tools >> Preferences >> Simulation).
Our devolopers are working on the advanced options for running parallel simulations.