SSRS 2008 R2, SharePoint 2010 - Report Back button doesn't work beyond 1st level of drill through

 

Problem:

I have three reports -

ParentReport - X, ChildReport- A, ChildReport - B of A.

Drill through from X to A  - works great

Back Button from A to X – works great

Drill through from X to A to B – works great

Back button from B to A – works Great, but after that A to X Back Button doesn’t work.  I see yellow exclamation mark at the bottom left corner of the page and clicking it gets me this errors:

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Solution:

You want the SharePoint add-in update - 2008R2_RTM_RSShrPnt_CU7_2507770_10_50_1777_x64 from https://support.microsoft.com/hotfix/KBHotfix.aspx?kbnum=2507770&kbln=en-us