Interesting.
Now is the problem happening with other packages than a JS related?

Stef

> Hi-
> I created an issue in the tracker: 
> https://code.google.com/p/pharo/issues/detail?id=2697
> 
> Some packages that were created with and load fine into Pharo 1.1 release do 
> not load into Gemstone because of the use of WideStrings while creating the 
> mcz files.  I don't know how to dissect the mcz files at this time but in 
> describing my issue on the GLASS list, Dale Henrichs was able to reproduce 
> the problem and diagnose it.  His diagnosis is pasted below.
> 
> To recreate my issue you must be using Gemstone 2.4.4.1, Glass 1.0-beta8.2, 
> and GemTools for Gemstone 2.4.4.  First load the 
> ConfigurationOfJQueryWidgetBox package from the Metacello Repository on 
> SqueakSource.  Then run:
>    
> (ConfigurationOfJQueryWidgetBox project latestVersion) 
>         load: #('JQWidgetBox-FullCalendar-Core'). 
> 
> It will attempt to load the package but complain that a dependency for the 
> JQFullCalendar Class is not met.  The JQFullCalendar class is provided by the 
> JQWidgetBox-FullCalendar-Core package.  
> 
> Our entire discussion leading up to his diagnosis is here: 
> http://forum.world.st/aFilePackage-cannot-perform-the-selector-preamble-with-the-arguments-in-anArray-aChangeRecord-td2291748.html#a2294376
> 
> 
> 
> Is there a way to write the mcz files using something other than WideStrings 
> that will allow me to attempt to load them into Gemstone and perhaps get a 
> different result? 
> 
> Thanks
> 
> Paul
> 
>> Paul,
>> 
>> Okay, it looks to me like your mcz file(s) are "corrupted" ... probably 
>> due to a bug in Pharo 1.2 (that's the version you're using right?).
>> 
>> In an mcz file the snapshot of the definitions are serialized using two 
>> formats:
>> 
>>    1. a DataStream on an ordered collection of MCDefintions
>>    2. a chunk-file formatted string.
>> 
>> It appears that for the DataStream, the entire(?) stream is written as a 
>> WideString ... WideString is Squeak/Pharo dependent and is not portable 
>> at all ... this is new. When GemStone hits the widestring an error is 
>> thrown and Monticello tries to use the chunk-file format (which is why 
>> you ran into the preamble probelm ... chunk file format is normally hit 
>> (nor is it desirable to hit it)...
>> 
>> The chunk file-file is partially written as a WideString again...because 
>>   the WideString is not portable it breaks the parsing algorithms for 
>> GemStone ... interestingly enough the chunk-file string looks to be a 
>> WideString for the first hundred characters or so ...
>> 
>> One of three things is happening:
>> 
>>    1. someone in Pharo land decided it was a "good idea" to create mcz
>>       files using WideString
>>    2. The that you used to create the class had a WideString in it
>>    3. there is a bug somewhere in the pharo/monticello implementation
>> 
>> I can't guess which of those 3 the problem is and I can't guess what the 
>> solution might be either.
>> 
>> If you bring up this bug on the Pharo list, I'll monitor the list and if 
>> I can step in and help, I will.
>> 
>> Dale
>>   
>> 
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