Bert Freudenberg uploaded a new version of Tools to project The Trunk:
http://source.squeak.org/trunk/Tools-bf.439.mcz

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

Name: Tools-bf.439
Author: bf
Time: 11 January 2013, 3:16:13.128 pm
UUID: de303aa0-6b59-4df7-9d3a-23a15353065e
Ancestors: Tools-bf.438

When debugging a process from ProcessBrowser, do not try to resume it (see http://lists.squeakfoundation.org/pipermail/squeak-dev/2012-December/166749.html)

=============== Diff against Tools-bf.438 ===============

Item was changed:
  ----- Method: ProcessBrowser class>>debugProcess: (in category 'process control') -----
  debugProcess: aProcess
- 	self resumeProcess: aProcess.
  	aProcess debugWithTitle: 'Interrupted from the Process Browser'.
  !