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GroupingCollection is part of Flex Data Visualization components.
"For reasons best known to themselves, Adobe do not ship the trial Data Visualisation components with the SDK download, so you have to extract them from the Windows download yourself."
- http://rachaelandtom.info/content/using-flex-3-data-visualisation-components-with-flex-3-s dk
Bless you. I've spent the last 4 hours trying to figure out why I couldnt find them in 5 different sdks. thanks for your help.
ok, this might be a silly question, but the reason for upgrading to 3.2 was to resolve the xmllist error when refreshing the group collection. I copied the data visualization files as you described but Im still getting the same error with the 3.2 sdk.
Is there a newer version of the data visualization files?
I was unaware at the time I posted the link to you, it was for Linux platform.
Anyways, if you were able to find those 3 files and are still getting errors after placing them in the corresponding directories, I would suggest doing a ‘Clean’ (Project > Clean …).