Microthemer not saving anymore to micro theme [RESOLVED]

Hi,
My name is Raphael, I’m writing from italy, I’ve a website made in wordpress, hosted in 1&1.

Since days Microthemer is not exporting anymore the made changes to the micro theme I’m using.

Well I don’t know if it’s a coincidence but I’ve update some weeks ago to new version of WordPress and also few plugins.

I’ve already made a user for you to check yourself, if you want to see what happens.
Basically an error message saying:

Save Error: please see the message in the default view

And there it says to reload the page but didn’t work.

Now… I may have some sort of easy to fix setting… hope you can pass bay and have a look.
Thanks

PS: give me an e-mail where I can send you access data