uploading media- “missing a temporary folder”

Hi

I am new to wordpress an no expert on it!

I am trying to upload media- but when it goes through the upload process (flash or browser) it says crunching file and then “missing a temporary folder”. It is hosted through my provider on Linux, and I have tried creating folders- it origionally did not have the ‘upload’ folder but I created that.

I have tried to follow advice on hear but have not got anywhere- can anyone help with this? I am tearing my hair out!!