Many thanks to everyone who encouraged and helped me make the transition to TMG9.05.  I have it installed on two machines, one running Windows 10 32 bit (my old computer), the other Windows 10 64 bit.  Progress in moving over to the 64 bit environment has been pretty good except for one feature: neither computer's TMG will backup my project.  (I should add that my TMG7.04 project still backs up fine).     In each case the backup process ends with the error message 'OLE exception error: code 00000fd. OLE object may be corrupt'.  I have assumed that is is referring to the data being held by TMG and have been reviewing it.  Looking in the Exhibit Log under All exhibits, type: OLE shows none present.  I have checked the exhibits under Videos and all appear to be functioning correctly. I have also entered exhibits under the Insert New Exhibit (Other) command, so I have checked these.  I did discover that some had file names far too long as I had altered them not realising that they were the same files that were attached as exhibits.  These have now all been shortened considerably.  All these are mp4 exhibits and all run satisfactorily and show no signs of being corrupted.   All other exhibits are images and a few pdf text files.  Again as far as I can tell none appear to be corrupt and tests indicate no exhibits are missing.     I am working with only a small part of my complete project for a cousin and the problem seems to lie in it as the sample database that comes with TMG backs up properly.     As someone who makes regular and frequent backups I feel uncomfortable not being able to do this.  Does anyone have any thoughts on what might be wrong? With thanks and Happy New Year to all Nick Shelley