The consequence of this error is that certain public workspaces are not detected and therefore are not tagged and not purged.
Detailed error description
http://community.mega.com/t5/custom/page/page-id/mega-kb-solution?sid=501570000012wfwAAA
Hotfixes are already available for HOPEX V1R2-V1R3 CP8/9/10
http://community.mega.com/t5/Downloads-Updates/HOPEX-V1R2-V1R3-Download-amp-Updates/ta-p/8313