I created a composition using illustrator, now that i've moved the illustrator files from their orinal place the after effects file shows colour bars. When i try to replace the footage the replace footage option is greyed out. Please help me understand how to fix this.
Without any system information and other critical details like actual file storage locations nobody can tell you much. also start by flushing all AE caches. Sometimes functions get locked up because AE simply mistakenly thinks the cahce is still valid and no action needs to be taken.