For more info on the 6.1 release, please read the 6.1.0 release notes
Download Refined for Confluence 6.1.14:

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Cannot add attachments on layouts

This release addresses an issue related to a fix done in Version 6.1.13 related to saving layouts and user dashboards. The issue meant not being able to add for example an image to a Confluence Content Module and saving the layout. 

This should now be resolved in this release. 

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