Marcel Taeumel uploaded a new version of System to project The Trunk:
http://source.squeak.org/trunk/System-mt.808.mcz

==================== Summary ====================

Name: System-mt.808
Author: mt
Time: 6 April 2016, 10:52:46.735095 am
UUID: be179802-28c2-f942-afbf-ddbe14153684
Ancestors: System-mt.807

Temporary change to not lock up the system while moving #isMorphic into an extension category in Project.

=============== Diff against System-mt.807 ===============

Item was changed:
  ----- Method: SmalltalkImage>>isMorphic (in category 'snapshot and quit') -----
  isMorphic
+        "Temporary implementation."
+ 
+ 	^ (Project current respondsTo: #isMorphic) not or: [Project current isMorphic]!
-        
- 	^ Project current isMorphic!