[xwiki-users] Error number 3201 in 3: Exception while saving document

Hi I'm getting this error (see below) while trying to rollback to an older document version. I have made some class property changes (additions) recently, could this prevent a correct rollback? If so is there a solution? Error number 3201 in 3: Exception while saving document Patterns.GuessMyX Wrapped Exception: Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect): [com.xpn.xwiki.objects.StringProperty# Thanks Ajdin -------------------------------------------------------- NOTICE This message and any files transmitted with it is intended for the addressee only and may contain information that is confidential or privileged. Unauthorised use is strictly prohibited. If you are not the addressee, you should not read, copy, disclose or otherwise use this message, except for the purpose of delivery to the addressee. Any views or opinions expressed within this e-mail are those of the author and do not necessarily represent those of Coventry University.