Hi @elanorbreton
I have only just reinstalled CEP today on UC after a reinstall but thankfully the auto program worked for me if it had not I was going to follow the manual instructions for UC on the link below which is also the download link for CEP. If you have read this already what folders are missing/changed? I have just checked where mine auto installed in my folders and its the following path
To see what needs to be done I have downloaded CEP again as if I am going to add it manually and follow the install instructions to see if my auto install CEP files are in the same place and they are. :)
When you download and unzip the CEP folder there are the following 2 files:
EnableColorOptionsGMND.package
This file must be copied into your Downloads folder (overwriting any older version you might already have in there).
so I just looked in my own my documents/ the sims 2 ultimate collection/ downloads folder and that package file is there
next file is
EnableColorOptionsMMAT.package
This file must be copied into your *PROGRAM* installation folder (not in the Documents folder!).
computer/program files (86)/Origin Games/The Sims 2 Ultimate Collection/Double Deluxe/Base/TSdata/Res/ Sims3D
the file needs placing in the Sims3D folder and I can also confirm that file is in the same folder from my auto download
Extras" folder:
Open it and you will find 2 subfolders, "MyDocuments" and "ProgramFiles".
click into the my documents folder and you will see a zCEP-EXTRA file and inside that file the top package file reads
CEP EXTRA automatic angel lamp so you know you are in the right folder.
copy this ZCEP-EXTRA folder and place it in my document/the sims 2 ultimate collection folder, again I can confirm this is where the auto install put mine.
next the program files folder
you will see another folder names zCEP -EXTRA
the first file so you know you are in the right place is CEP EXTRA 2 storeyOFBcolumn package
copy the zCEP -EXTRA folder and place this in the following
computer/program files (86)/Origin Games/The Sims 2 Ultimate Collection/Double Deluxe/Base/TSdata/Res/catalog and place the folder in catalog again I can confirm from my auto install those files are in that folder.
Further info for manually installing is the same link as the download, however I have faithfully followed all the manual instructions from this link and the info from downloading the manual CEP files and everything was where it was supposed to be.
http://modthesims.info/download.php?t=92541
I hope that can help you in some way as I know from past experience with UC the file paths are not the same as when the disc version of the game was used.
EDIT: just remembered to add I am on windows 7 OS as well..