Because of TextContants. The users are:

Smalltalk allClasses select: [:each | each poolDictionaryNames includes: 'TextConstants' ]� ->� an OrderedCollection(CharacterBlock CharacterScanner CompositionScanner EncryptedMultiDisplayScanner FontSet LogicalFontManager MetacelloScriptLoader MultiCharacterBlockScanner MultiCharacterScanner MultiDisplayScanner ParseNode ScriptLoader StandardFonts StrikeFont StrikeFontSet TTCFont TTCFontDescription TTCFontSet TTFontDescription TTFontReader Text TextAlignment TextLine TextStyle UpdatingStringMorph)

so we thought the problem is Compiler. But we don't want that package in the kernel either ;)
So...I removed 'Compiler' and 'Text' from #kernelPackageNames.
The problem is now that during the shrinking we are removing Compiler, but we need it after ;)
�
PharoKernel shrinking report
Error:
MessageNotUnderstood: CompiledMethod>>parserClass
341 2 BlockClosure>>cull:
3 BlockClosure>>cull:cull:
4 5 BlockClosure>>cull:
6 7 BlockClosure>>ensure:
8 MethodContext(ContextPart)>>handleSignal:
9 MessageNotUnderstood(Exception)>>signal
10 CompiledMethod(Object)>>doesNotUnderstand: #parserClass
11 CompiledMethod>>getSourceReplacingSelectorWith:
12 ClassDescription class(Behavior)>>addTraitSelector:withMethod:
13 14 OrderedCollection>>do:
15 ClassDescription class(Behavior)>>updateMethodDictionarySelector:
16 17 Array(SequenceableCollection)>>do:
18 ClassDescription class(Behavior)>>noteChangedSelectors:
19 ClassDescription class(Behavior)>>removeSelector:
20 ClassDescription class(ClassDescription)>>removeSelector:
21 22 Array(SequenceableCollection)>>do:
23 ClassDescription class(ClassDescription)>>removeCategory:
24 25 OrderedCollection>>do:
26 27 Set>>do:
28 SystemNavigation>>removeAllButPackages:
29 30 BlockClosure>>on:do:
31 BlockClosure>>ifError:
32 SmalltalkImage>>privShrinkingProcess
33 34
�

So I think SystemNavigation default removeAllButPackages: self kernelPackageNames.
should not remove Compiler and we should do it at the end of the process?

Pavel?