Redownload the library, ideally using a download manager to prevent packet loss.
Go to your original download package or navigate to the Ample Sound installation folder on your system storage. ample sound loading samples failed
Find the library folder on your machine (e.g., AGM_Library for guitar or ABPL_Library for bass). Redownload the library, ideally using a download manager
Users often download the plugin installer (which is small, around 100MB) and forget to download and run the separate (which is much larger, several GBs). Redownload the library