Thanks, this fixes it for me! Henrik Johansen <henrik.s.johansen@veloxit.no> writes:

Yes, it's caused by preferences referencing obsolete classes.

Change Preferences class >> removePreference: aSymbol "Remove all memory of the given preference symbol."

self dictionaryOfPreferences removeKey: aSymbol ifAbsent: []. Parameters removeKey: aSymbol ifAbsent: []. (Parameters at: #PersonalDictionaryOfPreferences ifAbsent: []) ifNotNil: [:personalDict | personalDict removeKey: aSymbol ifAbsent: []]

Then evaluate:

Preferences removePreference: #automaticFlapLayout; removePreference: #navigatorOnLeftEdge; removePreference: #classicNavigatorEnabled.

And you should be able to save.

Cheers, Henry

On Nov 23, 2009, at 4:46 17PM, Henrik Jegbjerg Hansen wrote:

...

Saving preferences to disk gives an error in latest pharo core. I am on Ubuntu Linux with the latest VM.

Any ideas how to fix this?

-- Henrik Jegbjerg Hansen

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-- Henrik Jegbjerg Hansen