Question2Replies1371Views×Close popoverSiva Kumar Samudrala (SivaKumarS2856) United Health group SoftWare Engineer United Health group IN View Profile SivaKumarS2856 Member since 2015 5 posts United Health group Posted: December 31, 2018Last activity: January 10, 2019Posted: 31 Dec 2018 7:48 ESTLast activity: 10 Jan 2019 8:36 EST Closed Unable to open cases - Component stack mismatch After upgrade from 7.1.9 to 7.4Hi ,After upgrading form 7.1.9 to 7.4 we are unable to open any case- we receive error asSection 'Review' execution error on page 'pyWorkPage' of class ' '. java.lang.RuntimeException: Component stack mismatch System Administration Upgrades ×Close popoverFacebookTwitterLinkedinEmail Copy Link Copied! Moderation Team has archived post This thread is closed to future replies. Content and links will no longer be updated. If you have the same/similar Question, please write a new Question. Posted: 2 years agoPosted: 31 Dec 2018 10:04 EST×Close popoverMarc Lasserre (MarcLasserre_GCS) PEGA Principal Software Solutions Engineer PEG FR View ProfileMarcLasserre_GCS PEGA replied to SivaKumarS2856Hello, Looks like the class is blank. Can you trace it and share the tracer ouput? Regards Posted: 2 years agoPosted: 10 Jan 2019 8:36 EST×Close popoverPatrick Capron (PatrickC8660) TD Bank Group Solutions Design IT Specialist TD Bank Group CA View ProfilePatrickC8660 TD Bank Group replied to SivaKumarS2856I am facing the same issue, but only for a specific section and we updated from 7.2.2. Any luck fixing it? *** EDIT *** For me it started working eventually without doing anything. Other developers did not see the issue.