[pdurrant]

Originally Posted by Ella

I've read all the readmes ... I swear!

I get this when trying to install the plugin:

calibre, version 0.7.49
ERROR: Unhandled exception: <b>InvalidPlugin</b>:No valid plugin found in C:/Documents and Settings/xxxxx/My Documents/Downloads/tools_v4.7/Calibre_Plugins/K4MobiDeDRM_v03.7_plugin.zip

Traceback (most recent call last):
File "site-packages\calibre\gui2\preferences\plugins.py", line 281, in add_plugin
File "site-packages\calibre\customize\ui.py", line 379, in add_plugin
File "site-packages\calibre\customize\ui.py", line 94, in load_plugin
InvalidPlugin: No valid plugin found in C:/Documents and Settings/scoleman/My Documents/Downloads/tools_v4.7/Calibre_Plugins/K4MobiDeDRM_v03.7_plugin.zip

What am I missing? Thanks!

The plug-in format used by calibre changed. Update calibre to the latest version and all should be well.