There seems to be lots of us with this problem, and yet nobody seems to have any answers! I posted a week ago and still no joy. Cant seem to find any way to contact Adobe either, it just directs you back here, getting very frustrated now!!
The full installer is posted at the bottom of the Installation problems | Flash Player | Mac page. In the 'Still having problems' section.
...Edited to correct link to installation problems page...
thank you for your answer. It works fine! Now I know, whats the problem with the link:
The link on Adobes german help site ist broken, your link to Adobes global site works fine.
Thank you for pointing out that the link on the German help page is incorrect. I'll escalate this and get the links fixed.