I have purchased a document which is in ACSM format. I know nothing of this format. ADE 2 appears to download the data and displays the pages, but is extremely slow in scrolling the pages. So slow as to be useless. Any change takes ages to accomplsh. I am using an Apple MacBook Pro running OS 10.8.3.
I have no trouble at all reading the ADE 2 'Getting Started' file which runs as I would have expected the app to perform. I am considering deleting ADE 2 and downloading it again, but am concerned how that would effect the validisation process.
If you reinstall it should not change validation/authorization.
ADE has a way of getting authorization mixed up; if it does go wrong
ctrl-shift-D to ADE to remove old authorization (cmd-shift-D for you on a Mac)
You may find the old version v1.7.2 better, much more reliable in many ways than ADE2.0 which is a load of bug riddled rubbish.
Version 1.7.2, it is a little difficult to find, available on Adobe site for Windows and for Mac.
The forum software is sometimes corrupting the link above. There shouldn't be a blank in 'editio ns.html'. The following redirects to the same page: http://tinyurl.com/diged172
I followed your advice and replaced ADE 2 with ADE 1.7.2 and that fixed the problem. I can now read the document and scroll with ease. I am much obliged for your detailed and constructive help. I don't know what is wrong with ADE 2, but it needs something done to it.