Browser refresh error when reporting

[Anonymous]

Hi Marketo,
I'm trying to drag in a 'campaigns' filter for my report but getting the following message;

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error loading tree
the tree did not load correctly
refresh your browser
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i've refreshed the browser, cleared the cache, logged out/in again and tried in 3 different browsers but have had the same message all day.

Please can this be fixed.
thanks.

[Anonymous]

I have deleted the tree cache. Please clear cache and cookies before the next login.
Please raise a support case if the problem persists.