Cannot upload images in Expression Engine using MSM (multiple site manager)

I have a single website that uses expression engine to manage its content. I can upload images to Chicago, but cannot upload any images to the other 3 properties. You can view the website here: [login to view URL] It appears to be a problem with the 3rd party plugin: Channel images and MSM (multi-site manager). I discussed the issue with the 3rd party developer and stated that I need to remove the 302 redirect to fix the image upload problem. This is where I am stuck. I need someones help that knows Expression Engine to help me troubleshoot the issue and allow the ability to upload images to Expression Engine for the other 3 properties. I understand this is impossible to understand the # of hours it will take, so I would suggest you bid for 2 hours to investigate and then once you have had a chance to review the code we can discuss a fair price for moving forward. I can then either create another project on vworker or pay you via instant bonus. I have several other issues I need help on, but I need to get this fixed ASAP. I look forward to working with you. Thanks, Jason