Hello,
I tried to install one of your plugins and this is the error message that I got:
The package could not be installed. No valid plugins were found.
Plugin install failed.
Please let me know what I can do or what I am doing wrong.
Thank you,
Sharon
Did you try installing it like you do a WordPress plugin? The Simple-Press plugin needs to be downloaded and copied to the folder that Simple:Press uses for it’s plugins. That folder is different.
Here is an explanation that might help.
http://codex.simple-press.com/codex/plugins/using-plugins/
There will be an easier way to add Simple:Press plugins in the next release but for now it is done manually.