I can't reinstall the creative Cloud Desktop Application

Yes, I checked similar questions!

I have a CC photography plan and am running Windows 7 Home Premium 64-bit.

I wanted to update Lightroom for Lightroom 5.71 CC but creative cloud App failed. I tried to reinstall, but it fails with the error code 50.

I tried to remove the application through Windows Control Panel failed and so I have downloaded and run CC Cleaner approx. creative cloud app will not install

I have studied this problem on this forum and the Adobe site and I think I've tried everything last week.

To add to my problems, I had originally a stand-alone version of Lightroom 5 that I considered may be cause of conflict. I've disconnected my account and tried to re, log and my serial number is not accepted!

I'm totally confused. There seems to be several others affected by similar issues but none of the solutions I've seen seems to work for me.

Adobes help seems to be missing a little. All users you suggest a solution? I have considered a total uninstall and reinstall, but I am reluctant to go down this path blindly.

Can anyone offer a solution please?

This is the relevant content of the lead Creative Cleaner.lof Cloud:

Gen_WWCombined-en_US-20121017_1230

[Sun may 03 15:16:54 2015] Please enter (y) for Yes or n for no.... > >

[Sun may 03 15:16:56 2015] Choose one of the following options to clean:

[Sun may 03 15:16:56 2015] 1 all

[Sun may 03 15:16:56 2015] 2 adobe Flash Player 10.2

[Sun may 03 15:16:56 2015] 3 creative 2014 cloud, cloud creative & CS6 products

[Sun may 03 15:16:56 2015] 4 creative Cloud 2014 only

[Sun may 03 15:16:56 2015] 5 creative cloud only

[Sun may 03 15:16:56 2015] 6 CS6 only

[Sun may 03 15:16:56 2015] 7 CS5 - CS5.5 - CS6

[Sun may 03 15:16:56 2015] 8 CS5 - CS5.5

[Sun may 03 15:16:56 2015] 9 CS3, CS4

[Sun may 03 15:16:56 2015] 10. Adobe Id credentials

[Sun may 03 15:16:56 2015] 11. Quit smoking

[Sun may 03 15:16:56 2015] Choice: >

[Sun may 03 15:17:02 2015] Selected by the user: Creative Cloud 2014 only

[Sun may 03 15:17:02 2015] Run the command: copy/y call "C:\Program Files (x 86) \Common" "C:\Program Files (x 86) \Common Files\Adobe\backup20150503T151702\pdb.db.

[Sun may 03 15:17:02 2015] Run the command: copy/y call "C:\Program Files (x 86) \Common" "C:\Program Files (x 86) \Common Files\Adobe\backup20150503T151702\Media_db.db.

[Sun may 03 15:17:02 2015] Open DB connection with path: C:\Program Files (x 86) \Common Files\Adobe\caps\pdb.db

[Sun may 03 15:17:02 2015] Open DB connection with path: C:\Program Files (x 86) \Common Files\Adobe\caps\Media_db.db

[Sun may 03 15:17:02 2015] List of products installed on this computer

[Sun may 03 15:17:02 2015] List of products for cleaning:

[Sun may 03 15:17:02 2015] 2 {D7A4F897-B20A-42D0-862D-CB5F6DB7391D} Adobe Photoshop CC 2014 Core

[Sun may 03 15:17:02 2015] 3 {Adobe Lightroom 8048A5DF-8A70-5BE1-954B-E0FDE1BD0D0D}

[Sun may 03 15:17:02 2015] Please enter the number of the option of the product to remove; Enter (q) to exit... > >

[Sun may 03 15:17:05 to 2015] response 1

[Sun may 03 15:17:05 to 2015] The following products will be deleted: Adobe Creative Cloud Desktop

[Sun may 03 15:17:05 to 2015] The following product has been selected for removal: Adobe Creative Cloud Desktop

Please confirm you want to delete the selected product from the database setup.

[Sun may 03 15:17:05 to 2015] Type (y) to confirm and delete or (n) to quit smoking... > >

[Sun may 03 15:17:08 2015] Please wait for Adobe Creative Cloud tool cleaner finish...

[Sun may 03 15:17:08 2015] OSVersion: 64 - bit

[Sun may 03 15:17:08 2015] Removal of root registry: HKLM key: Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run value: Adobe Creative Cloud

[Sun may 03 15:17:08 2015] Exception during deleting key: (2, 'RegDeleteValue', "the system cannot find the file specified.")

[Sun may 03 15:17:08 2015] Removal of root registry: HKLM key: Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run value: AdobeCEPServiceManager

[Sun may 03 15:17:08 2015] Exception during deleting key: (2, 'RegDeleteValue', "the system cannot find the file specified.")

[Sun may 03 15:17:08 2015] Removal of root registry: HKLM key:Software\Wow6432Node\Adobe\CSXS.4 value: SmsManifestBaseURL

[Sun may 03 15:17:08 2015] Exception during deleting key: (2, 'RegOpenKeyEx', "the system cannot find the file specified.")

[Sun may 03 15:17:08 2015] Removal of root registry: HKLM key:Software\Wow6432Node\Adobe\CSXS.4 value: SmsUpdateCheckInterval

[Sun may 03 15:17:08 2015] Exception during deleting key: (2, 'RegOpenKeyEx', "the system cannot find the file specified.")

[Sun may 03 15:17:08 2015] Removal of root registry: HKLM key:Software\Wow6432Node\Adobe\CSXS.4 value: LogLevel

[Sun may 03 15:17:08 2015] Exception during deleting key: (2, 'RegOpenKeyEx', "the system cannot find the file specified.")

[Sun may 03 15:17:08 2015] Removal of root registry: HKLM key: CC Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\Adobe

[Sun may 03 15:17:08 2015] Exception during deleting key: (2, 'RegDeleteTree', "the system cannot find the file specified.")

[Sun may 03 15:17:08 2015] Remove the key from registry root: HKCR: AAM

[Sun may 03 15:17:08 2015] Exception during deleting key: (2, 'RegDeleteTree', "the system cannot find the file specified.")

[Sun may 03 15:17:08 2015] Deletion of registry root: HKCR key:AdobeAAMDetect.AdobeAAMDetect

[Sun may 03 15:17:08 2015] Deletion of registry root: HKCR key:AdobeAAMDetect.AdobeAAMDetect.1

[Sun may 03 15:17:08 2015] Deletion of registry root: HKCR key:AdobeAAMDetect.AdobeAAMDetect.2

[Sun may 03 15:17:08 2015] Exception during deleting key: (2, 'RegDeleteTree', "the system cannot find the file specified.")

[Sun may 03 15:17:08 2015] Shortcut of the CCA was not C:\Users\Public\Desktop\Adobe creative Cloud.lnk

[Sun may 03 15:17:08 2015] Shortcut of the ACC wasn't C:\ProgramData\Microsoft\Windows\Start Start Cloud.lnk creative

[Sun may 03 15:17:08 2015] CoreSync custom hook not found

[Sun may 03 15:17:08 2015] WARNING: Cannot delete the file, folder, try again

[Sun may 03 15:17:08 2015] WARNING: Failed again to remove the file, file

[Sun may 03 15:17:08 2015] WARNING: Cannot delete the file, folder, try again

[Sun may 03 15:17:08 2015] WARNING: Failed again to remove the file, file

[Sun may 03 15:17:08 2015] WARNING: Cannot delete the file, folder, try again

[Sun may 03 15:17:08 2015] WARNING: Failed again to remove the file, file

[Sun may 03 15:17:08 2015] Try deleting the folder because the folder still exists

[Sun may 03 15:17:08 2015] WARNING: Cannot delete the file, folder, try again

[Sun may 03 15:17:08 2015] WARNING: Failed again to remove the file, file

[Sun may 03 15:17:08 2015] WARNING: Cannot delete the file, folder, try again

[Sun may 03 15:17:08 2015] WARNING: Failed again to remove the file, file

[Sun may 03 15:17:08 2015] WARNING: Cannot delete the file, folder, try again

[Sun may 03 15:17:08 2015] WARNING: Failed again to remove the file, file

[Sun may 03 15:17:08 2015] Some files could not be cleaned. Please try closing your internet browser and re-run the cleanup tool to complete your cleaning.

[Sun may 03 15:17:08 2015] Action: Create the folder C:\Program Files (x 86) \Common Files\Adobe\backup20150503T151702 as backup of PDB and DB for this session.

[Sun may 03 15:17:08 2015] SAVED LOG FILE: C:\Users\Bob\AppData\Local\Temp\Adobe Creative cloud cleanser Tool.log

[Sun may 03 15:17:08 2015] Adobe Creative Cloud tool in cleaning completed successfully

[Sun may 03 15:17:08 2015]

[Sun may 03 15:17:08 2015] *-*-*-*-*-*-: START:-SUMMARY OF THE avertissements-*-*-*-*-*-*