Premiere Fail

Well another wasted day. Spent ages filming in Conwy over the weekend. The software we have refuses to accept some of the files some of the time. It contantly changes what it does or doesn't accept too..... Really caused me headaches today. Went through over 40 videos I shot and now can't edit them. It's been put forward that changing the format may help... We will see if that works. If not all the work I have done is wasted. Fingers crossed.