Using Cloudfront and S3 on another site but want to use same bucket.

I have a site that is syncing images to s3 using custom code, and a new site that i am using your plugin. the new site is just a copy of the old site, so images are the same. but when i try to save settings i get the “Error message: Aws classes are in use somewhere else” error… how can i use your plugin to sync the new site while its in dev, soon to be live and still have the live site working with its custom solution.