I followed the instruction Jen Cramer listed in her joomla update course:
-ported my 1.5 site over to a test location. (online not local)
and created an spugrade subdirectory in the 1.5 site.
-I made backups of data belonging to extensions (forms, newsletter, etc)
-I then stripped the site of all extensions and none joomla modules
migrated the site
-deleted the original 1.5 site in the root
and copied the content of the 2.5 spupgrade site to the empty root
-I then reinstalled JCE, Akeeba and the other plugins
-tested the test site and
-moved it to the live site.
So far--so good
A real pity as it looks very promising
I just repeat the test personally.
I registered, I confirm that registration, and I download the component after accepting the license.
I had no problem, and I perform the operation in 2 minutes.
I do not understand your problem, you're on your mail?