Hi, I am migrating from Pharo 2.0 to Pharo3.0 My updateRoot contains the following statement: updateRoot: aHtmlRoot aHtmlRoot link url: RKALibrary / #mainStylesLess; relationship: 'stylesheet/less'; beCss. In Pharo 3.0 I get ByteArray errorImproperStore error (Pharo2.0 works) When debugging into, I see: In Pharo 2.0 GRPharoPlatform>>readWriteByteStream "ByteArray based read write stream" ^ RWBinaryOrTextStream on: (ByteArray new: 4096) In Pharo 3.0 GRPharoPlatform>>readWriteByteStream "ByteArray based read write stream" ^ ReadWriteStream on: (ByteArray new: 4096) This is the reason for the error improperStore error. If I change from ReadWriteStream to RWBinaryOrTextStream, it works. Can anyone fix this or is my conclusion wrong? Regards Sabine -- View this message in context: http://forum.world.st/errorImproperStore-error-because-of-change-in-GRPharoP... Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com.