PROBLEM: We just started getting error 457 below. PR-Tracker was working fine for months and then this problem showed up. Error 457: This key is already associated with an element of this collection SOLUTION: This error message is caused by a PR-Tracker bug that was fix in version 5.10. It occurs when there is more than one blank line in the PR-Tracker adminstrator contact information. The adminstrator contact information can be set by doing PR-Tracker menu Setup | Administrator Contact.