Having Trouble With 7

I am having trouble with dolphin 7 and I think it may be something that im doing instead of faults, At the minuteI cannot upload videos via flash, regular, or embed, it completes the progress bar and comes up with video upload failed (video error) 
The other problem I am having is editing the flash modules, when i click on flash modules in the admin panel the page loads but nothing shows. 
The final problem I have is when I post something in the forum it doesn't show the editing page shows and just refreshes when i hit submit.
I have used previous versions of dolphin betas and I have had no problems and that is why I think it may be something im doing wrong
I have checked ffmpeg.exe and the permissions are set to 777 and i have checked the cron jobs and they are set up right. 

I hope someone can help
Thanks