CAN´T submit filter! Tells me I have external images BUT is not true!!

Hello, I was going to submit this filter attached here, but when I opened the submit wizard it tells me the following error message

Quote
Filters that reference external images cannot be submitted

I of course already know about this, and this is why NONE of the presets have any external image, and all have ONLY built-in images or plain color, there is NO reference to any external image inside the presets or inside the filter itself

Please, could anyone tell me and help me to know what is happening?

I can´t fix something that is not broken

I can´t delete any reference to any external if they are not there

I have already deleted all the color controls and replaced them with NEW ones, and then rebuilt the filter and it KEEPS telling me that there are external images

I do not know what to do

Thanks very much for any help

FF 4.0

Alphabet ANY Font Texture Creator Basic.ffxml

I also see that on that very last preset the Main Image or Color needs to be checked...

Thanks really very much for your help and all the time taken to spot and find the problem I had, and what is curious and funny that I have checked 2 times the first 19 presets and did NOT check the last one, and do not know why?

I spent about an hour searching for the external image and changed the filter and rebuilt the filter and could not find the problem and you have done it right and have been kind to let me know about it

Thanks to you I have been able to submit the filter and is now available in the library

Now with this experience I know more for any future possible problem