If you have OnePager Pro 4.1.7 installed, you should be aware of a bug that we recently discovered during a customer demo. If you right-click on a swimlane, open its Properties dialog box, and change anything to do with the borders of that swimlane (border width, border color, border dash pattern, ...) you will get a long pause and then the announcement of a "stack overflow" exception. When I tried this recently, it threw me completely out of Microsoft Project. This bug was not present in any of the earlier versions of OnePager Pro, and we have already found the culprit and made the fix to this bug. Watch this forum for the announcement of when OnePager Pro 4.1.8 is available for download. We're very sorry about this bug and hope that it does not cause you too much inconvenience.

P.S. This bug does not apply to row borders. Nor does it apply to making global changes to all swimlane borders via the Project-View Properties Dialog Box. This bug is limited to changing individual swimlane borders in OnePager Pro 4.1.7