Not able to upload a photo

Hi everyone. Today, I tried to upload several images, but Wikia didn't let me. I struggled with this for hours now. It's really inconvenient so I decided to write a blog about it. Whenever I try to upload a picture, it says:

"Could not create directory "mwstore://swift-backend/lumblr/images/7/76". <a href="/index.php?title=Special:Contact&wpContactProblem=Bug:Directory+permission+error">Please report the above error using this form</a>"

Is this a Wikia bug or is it just my computer? Chat isn't working either. Anyone know how to fix this?