I am having a problem were i can't open a certain .aic file which i have been working on with no problems for a few days. it seems that it is only this one file that will not open from the adobe illustrator cloud. Does anyone know how to fix this problem. i have tried reverting file to old version and making a copy on the creative cloud website but it still will not open the file. No error message is appearing and illustartor is not crashing.