I have installed the plugin and get the error that I need the optipng and gifsicle plugins.
I am having trouble installing these plugins.
I use GoDaddy as a host. I do not have access to the root folder.
I use Filezilla to upload files. I do not see a home directory as a folder to open on the server. I believe my ftp takes me to the home directory.
I saved the optipng and gifsicle zip files to my PC desktop.
GoDaddy tech support indicated I should unzip the files, and copy the optipng.c file to the directory noted in step 8 of the install instructions, and rename the file optipng-custom. The same for gifsicle - copy the gifsicle.c file to the directory noted in step 7.
No other steps were taken.
The other steps are a blur as it seems your instructions tell me to load the zip file to the server and unzip it in the server and perform a configuration. But I am not sure if I understand you correctly and how to proceed.
My debug info is hosted at http://pastebin.com/xUU9DAsF
Please provide user friendly, non-techie additional instructions.