Latest 12.2 not playing .iso

Hi

I downloaded and installed the current stable release of xbmcububtu12.2 intel/nvidia. Did a recovery from a backup of files/plugins etc and now some .iso files wont load at all and others stop part way through (lock up) and I can't get them to resume. xbmc sya the file is Now Playing... (whatever) but it isnt.
logs here http://xbmclogs.com/show.php?id=24956

Hope someone can help