On Fri, Aug 29, 2014 at 11:42:24AM +0200, Yuriy Tymchuk wrote:

Sometimes when I save image I get this error:

UndefinedObject(Object)>>doesNotUnderstand: #wait [ event wait. processSynchronizationDelay wait. "Avoids lost signals in heavy process switching" self changed: #childProcessStatus ] in [ [ event wait. processSynchronizationDelay wait. "Avoids lost signals in heavy process switching" self changed: #childProcessStatus ] repeat ] in UnixOSProcessAccessor>>grimReaperProcess in Block: [ ... BlockClosure>>repeat [ [ event wait. processSynchronizationDelay wait. "Avoids lost signals in heavy process switching" self changed: #childProcessStatus ] repeat ] in UnixOSProcessAccessor>>grimReaperProcess in Block: [ ... [ self value. Processor terminateActive ] in BlockClosure>>newProcess in Block: [ ...

Is it a known problem?

Hi Uko, I have not seen this before, but I can say that the error is coming from OSProcess. OSProcess uses a background process that wakes up when a child OS process (that was started earlier by OSProcess) has exited. I do not know the reason for the failure that you are seeing, but I am guessing that it may be somehow related to image shutdown and startup processing when you save the image. Dave