[ubuntu] puddleTAG edit AAC's tag

Ubuntu 14.04LTS in Compaq CQ40-328TU

currently, i use puddleTAG 1.1.1 with Qt 4.8.6
lately i found there are some AAC (not all AAC) is unable to be processed and i don't know why ... process will stuck and ended with high CPU usage.
so i was forced to give ubuntu's default, easyTAG a try ... and it's OK.

is there an error with my puddleTAG? how can i fix it?
i love the way puddleTAG process my file and i much prefer it to easyTAG
cos i don't know how to add field in easyTAG ... ... i wish to add "performer" field ... googling already ... but found nothing

Thank you