this InvalidArrayIndex signature remains in 50.0b3 even with bug 1302478 landed. The signature was #2 crash for 50.0b2 bp-e8484851-c0ec-4cb3-90af-12d262161101. The user has several addons, but not e mailsummaries. 0 xul.dll InvalidArrayIndex_CRASH(unsigned int, unsigned int) xpcom/glue/nsTArray.cpp:35 1 xul.dll nsTArray_Impl<nsMenuPopupFrame*, nsTArrayInfallibleAllocator>::ElementAt(unsigned int) C:/builds/moz2_slave/tb-rel-c-beta-w32_bld-00000000/build/objdir-tb/dist/include/nsTArray.h:996 2 xul.dll nsMsgDBView::GetMsgHdrForViewIndex(unsigned int, nsIMsgDBHdr**) C:/builds/moz2_slave/tb-rel-c-beta-w32_bld-00000000/build/mailnews/base/src/nsMsgDBView.cpp:1624 3 xul.dll nsMsgDBView::UpdateDisplayMessage(unsigned int) C:/builds/moz2_slave/tb-rel-c-beta-w32_bld-00000000/build/mailnews/base/src/nsMsgDBView.cpp:1080 4 xul.dll nsMsgDBView::ReloadMessage() C:/builds/moz2_slave/tb-rel-c-beta-w32_bld-00000000/build/mailnews/base/src/nsMsgDBView.cpp:1066

this bug and the other one are dupes of and fixed by bug 1312136.

I just experienced it: bp-1ffb2133-8710-4615-8739-49ef42170102 I was running imapfilter in parallel to sort imap emails on server side.

tb crashed when it was doing: 4924 messages moved from foo@bar@imap.gmail.com/INBOX to foo@bar@imap.gmail.com/bugs.

(In reply to Sylvestre Ledru [:sylvestre] from comment #3) > tb crashed when it was doing: > 4924 messages moved from foo@bar@imap.gmail.com/INBOX to > foo@bar@imap.gmail.com/bugs. sylvetre, is 51.0b1 and 51.0b2 being good to you? Crash-stats shows no crashes for 51.x. 50.x was 1-5 crashes per day.

I haven't seen it this then but doesn't mean it is fixed :)

no crashes starting TB51, so I believe this was fixed by bug 1312136