When selecting a certain PrintEnvironment an error message "File is not a valid ICC profile." can appear.
This error message indicates that the embedded color profile got corrupted.
Try to find out if the ICC is still good by clicking OK and selecting any other PrintEnvironment. If the message appears again as soon as you switch back to the regarding PE it is irreversible damaged.
Solution/Work-Around
Luckily Ergosoft saves a copy of the previous version of the PrintEnvironment whenever something has changed in it. You can find this backup PrintEnvironment here: C:\Users\Public\Documents\EsRip\17\Data\Archive\PrEnv Just delete the damaged PrintEnviroment and import the previous version of it. (There's a date and time indication in the PE name.)