Hello,
I have gone through your requirements, You are facing two issue...
1) Unknown column
2) Unsupported Image
So, Yes I can fix it within hour & I am ready to fix it using TeamViewer.
I am fresher on this platform But I have worked on more than 50 magento website in four years of my professional career. Also I am Magento Certified Developer.
Let me know if you are interested, Its very easy task for me.
Thakns,
Nitin