problems with the getgroupbyname (peoples function plugin)

Question

Has anyone experienced problems with the getgroupbyname (peoples function plugin)? The function works fine most of the time, however we experience some odd behavior after the system admin shuts down to apply windows security updates. When the application starts up we receive the following alert(s): There is a problem with the process Delinquent Loan Process - 7035405. The expression function 'getgroupbyname("Clx 723 MORTGAGE MARKETS LLC")' (user=kfunkey, exprId=536871013) could not be evaluated: JAXB failure trying to convert value 381 to Appian type Group (id=5) (Data Inputs). This process is paused by exception. The People's function was successfully installed according to the app-server log. Any ideas... 
 OriginalPostID-67344 
 OriginalPostID-67344

Eduardo Fuentes · Accepted Answer

It seems you indeed have a class loader issue as suggested by Stefan. Restarting JBoss should fix the problem. However, to prevent the issue from reoccurring make sure to review all plug-ins (JAR's) under \_admin\plugins (those plug-ins you didn't get in Forum) and make sure they are not including JARs of type appian-*.jar or JARs that you also find under /ear/suite.ear/lib or in /all/lib* inside the META-INF/lib directory, it could be you have plug-ins that are including libraries from previous Appian versions or JAR's that shouldn't be there.