Plugin Activation due to header

This plugin produces the following WP Error upon activation:

[no_plugin_header] => Array
(
[0] => The plugin does not have a valid header.
)

The reason is simply because you don’t have the header at the very top of the main plugin file. This can be a problem if your other text is too large as WordPress only consumes a small portion of the headers of the files to parse all possible plugins in the folder.

Worth swapping the order of your WordPress plugin header text with your license text