Exit Code 7 installing Dreamweaver CS5

Question

After going through Live Chat, giving proof of purchase and not even being asked for details of the error log before being directed to a page that was in the end zero help, I'm really finding my patience running thin with Adobe's installers & the flimsy "call center" style support.
Anyone here got any experience with this error?
System:
Windows 7 64bit
Intel i7 980X
12GB RAM
nVidia Quadro FX3800 1GB
Lots of HDD
Also installed: CS5 Production Premium
Cheers, in advance.
Exit Code: 7
-------------------------------------- Summary --------------------------------------
- 0 fatal error(s), 13 error(s), 18 warning(s)
WARNING: OS requirements not met for {C79312BD-3E76-4474-A10C-1435D1856A4B}
WARNING: OS requirements not met for {E4E188D2-27D5-4E4C-92CE-87F9D24AD2F6}
WARNING: OS requirements not met for {E995AC53-954A-48D2-A861-613B8D42A9BE}
WARNING: OS requirements not met for {F6FA54C9-3E8F-4416-905C-DA5398DF9640}
WARNING: Warning: {6E505C8F-2896-11DF-9B64-0013724DD917} DeviceCentral will not be repaired, due to updated patch of STI and one of the top level payload is being installed.
WARNING: Warning: {1D830E80-28A4-11DF-A025-0024E8692489} DeviceCentral_DeviceCentral3LP-en_GB will not be repaired, due to updated patch of STI and one of the top level payload is being installed.
WARNING: Payload cannot be installed due to dependent operation failure
WARNING: Payload cannot be installed due to dependent operation failure
WARNING: Payload cannot be installed due to dependent operation failure
WARNING: Payload cannot be installed due to dependent operation failure
WARNING: Payload cannot be installed due to dependent operation failure
WARNING: Payload cannot be installed due to dependent operation failure
WARNING: Payload cannot be installed due to dependent operation failure
WARNING: Payload cannot be installed due to dependent operation failure
WARNING: Warning: {6E505C8F-2896-11DF-9B64-0013724DD917} DeviceCentral will not be repaired, due to updated patch of STI and one of the top level payload is being installed.
WARNING: Warning: {1D830E80-28A4-11DF-A025-0024E8692489} DeviceCentral_DeviceCentral3LP-en_GB will not be repaired, due to updated patch of STI and one of the top level payload is being installed.
WARNING: Payload cannot be installed due to dependent operation failure
WARNING: Payload cannot be installed due to dependent operation failure
ERROR: MsiConfigureProductEx failed with error: 1612
ERROR: The following payload errors were found during install:
ERROR:  - SiteCatalyst NetAverages: Install failed
ERROR:  - Adobe ReviewPanel CS5: Install failed
ERROR:  - CSXS Story Extension: Install failed
ERROR:  - Suite Shared Configuration CS5: Install failed
ERROR:  - Adobe Linguistics CS5: Install failed
ERROR:  - Adobe CSXS Extensions CS5: Install failed
ERROR:  - HIL Help Search: Install failed
ERROR:  - Adobe Dreamweaver CS5: Failed due to Language Pack installation failure
ERROR:  - Microsoft_VC80_MFC_x86: Install failed
ERROR:  - Microsoft_VC80_MFCLOC_x86: Install failed
ERROR:  - Adobe Dreamweaver CS5_AdobeDreamweaver11en_USLanguagePack: Install failed

Answer 1

Not sure how much ground you've already covered in researching this but here are some suggestions:
There's a similar thread here (no clear answers other than some detective work unfortunately)
http://forums.adobe.com/message/2837767
Also try
Troubleshoot CS5 installation with install logs
http://kb2.adobe.com/cps/844/cpsid_84451.html
Error, "Exit Code: 6" or "Exit Code: 7" occurs when installing a Creative Suite 5 product
http://kb2.adobe.com/cps/843/cpsid_84332.html