I had this issue when I updated to 1.8.8-8 and found the answer on here during a search.
The process for getting the EZ scripts back is as follows:
- Open SCRIPT
- Click on Feature Scripts
- Click on Add
- Navigate to where the scripts folder is located (PixInsight/src/scripts)
- Click on the scripts folder and then click the Select Folder button.
- After additional scripts are found, click OK. Then click on Done.
- The EZ Processing Suite should now be visible when SCRIPT is opened.