Have you tryed installing Flash trough Firefox? When not, do this: Go on a site that uses flash and let firefox (wich will say you that the site requieres plugins)download and install it.
yes i tryed that it says firefox could not do it so i clicked manual install the first post i tryed worked thank uu very much for your replys so simple dont no why i didnt try that thank you again
yeah those adobe download managers are not written very well, instead of using environment variables for things they tend to hard code locations which when the installer can't write to the location it crashes.