Thanks very much Jude.
Please accept my thanks , for give to me some attention. I will remove all codecs from one of the machines, and re trial the import/edit. . If will be ok , so i will talk to my business partner, in order to update our workstations . PPro, past CS5.5, have new features like adjustment layer, dolby support ( AA -CC2014), that we are need to have here. Maintaining PPro, AA, and the rest of adobe suite, will save a very costly NLE change. Yes Jude , i will call the IT tech , and we search for the coded that will be the culprit. I will keep you informed . Yes we allways installed "our pack" of plugins ( BCC, LOOK , MOJO and various NewBlue ).
Best regards,
Leonardo.