PREP_EXTENSION/IS_SELECT steps repeating for C-CEE without progress

Hi,

I am applying some patches to my EHP7 IDES. During the phase PREP_EXTENSION/IS_SELECT same steps are repeating without progress as below

1. At IS_SELECT step i selected to upgrade C-CEE to version 110_604 and clicked on next button

2. In the next dialog step I have chosen the option upgrade add-on with SAINT package

3. Now system is again going to step IS_SELECTION for selecting add-on.

This loop is continuing without progressing further step.

I kept the ACP file C-CEE====110_604 & installation package in download folder

I'm using SUM1.0 SP16 PL7

Attached screenshots for your reference.