[Bugs] #152 MINO: write displays a black square instead of preview

[SugarLabs Bugs]

#152: write displays a black square instead of preview
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 Reporter:  tomeu   |       Owner:                   
     Type:  defect  |      Status:  new              
 Priority:  minor   |   Milestone:                   
Component:  Write   |     Version:  Git as of bugdate
 Keywords:          |  
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Ticket URL: <http://dev.sugarlabs.org/ticket/152>
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