CS6 Master Collection installer constant fail

Question

I purchased CS6 Master Collection and, to save download time, the reseller (iSoftware) burnt it to disk for me. All four folders are now in a single folder on my desktop. I've tried "setup.exe" multiple times (in part 1) and the installer always fails at the same point.
Yesterday I replaced Vista Business 64-bit with Win7 64-bit - same problem every time. The PDApp log states:
[FATAL] DWANative - Error in mdbGetProductIDList 12
.102 [FATAL] DeploymentNativeApplet The start applet did not return the result xml. StartApplet returned <error>Failed to open session</error>
.102 [FATAL] Deployment.FetchMediaInformation Error in starting deployment native applet
In case the DVD was faulty and was corrupt or missing a file I have also downloaded a replacement copy of part 1 from iSoftware - same result.
Computer: PC - HP xw6400 Workstation
Processors: 2 x Intel Xenon CPU E5345 - quad core with 8GB RAM
OS : Win 7 64-bit
I've run out of ideas and places to research. Where do I go from here?  All help gratefully received.
MIKE

Answer 1

download the proper installation files after cleaning your computer.
Use the CC Cleaner Tool to solve installation problems | CC, CS3-CS6
Downloads available:
Suites and Programs:  CC 2014 | CC | CS6 | CS5.5 | CS5 | CS4 | CS3
Acrobat:  XI, X | 9,8 | 9 standard
Premiere Elements:  12 | 11, 10 | 9, 8, 7
Photoshop Elements:  12 | 11, 10 | 9,8,7
Lightroom:  5.6| 5 | 4 | 3
Captivate:  8 | 7 | 6 | 5
Contribute:  CS5 | CS4, CS3
Download and installation help for Adobe links
Download and installation help for Prodesigntools links are listed on most linked pages.  They are critical; especially steps 1, 2 and 3.  If you click a link that does not have those steps listed, open a second window using the Lightroom 3 link to see those 'Important Instructions'.