This is an error I had under 1.1.6 and now under 1.1.7.
I have over 500 manufacturers that I need to insert as attributes, I have currently entered over 300 and now I cannot insert any more. When I attempt to add in another manufacturer and save it reverts me to the Magento dashboard and does not save anything in manufacturers attribute. One of my employees received a script error, but I have not seen the error.
In 1.1.6 I had all of the manufacturers in but I could not edit them later on. We then reloaded Magento and I am in the process of re-inputting the information. I have not inputted any products to this point.