Primary Problem:
I have tried the solution you suggested “Please disable all NSP modules on the homepage and check if that helps (after clearing the cache).” to no avail. The one module is still the issue.
I tried to attach the error log here but a .doc, .txt and .pdf attachment all said "file not allowed" (file size limit I'm thinking). Is there another way I can sent it to you?
No specific sql error is apparent but it appears it might be the gkthumbs errors appearing last in the list.
Secondary Problem:
In order to research the 1064 error we accessed the error log on the server which was 3.25GB, too large to open with any software we currently have. We deleted the error log and recreated the 1064 error and immediately downloaded the error log again. The log, after only one hour of being created is already over 9000 KB. After 5 hours it is now at 38,000KB. I do not think the application should be generating this many errors. Is it possible for you to address some of them so that the file can be kept at a manageable size?