Issue with PRSegmentPersistency in Pharo 1.4

Hi, When loading "Pier-Pharo-Persistency" in a Pharo 1.4, the following warning is raised: This package depends on the following classes: ImageSegment You must resolve these dependencies before you will be able to load these definitions: writeKernel:on: / / Select Proceed to continue, or close this window to cancel the operation. This is due to a reference to ImageSegment in the following method: PRSegmentPersistency >> serialize: aString | stream pointers | stream := self directory forceNewFileNamed: aString. pointers := [ [ ImageSegment new writeKernel: self kernel on: stream ] ensure: [ stream close ] ] on: Exception do: [ :error | nil ]. (pointers isNil or: [ pointers anySatisfy: [ :each | (each isLiteral or: [ each isVariableBinding ]) not ] ]) ifTrue: [ self directory deleteFileNamed: aString ifAbsent: [ ] ] Would this be worthy to fill a bug report? Cheers, Reza