I checked at UseGalaxy.org and didn’t find any bug reports send in for this tool either. Maybe you were working at a different server?
But first – if you are not sure how to review your job details, how to send in a bug report, or how to generate and post back a shared history link, please see the banner topic at this forum! It links to FAQs that explain the how-to.
That said, I agree with the guess @wm75 provided! The tool seems to be reporting it found unexpected characters in the sequence headers. You can simplify the fasta > title lines to see if that is enough! Try using a very simple identifier format with only letters and numbers, and no special characters and no whitespace. The tool is using these identifiers as a primary key in the other manipulations, and special characters can lead to algorithm problems like yours!
>goodFormat1
>not-as_$readable by Tools | due to spaces and [special] % characters
We have some tutorials that teach how to use some of the Text/Fasta Manipulation tools! You can also search the tool panel for common utility names to find these – the Help on the form is a mini-guide!
If you need help confirming this issue, or with resolving it, we’ll need to see the exact data in context in a shared history. You can leave your own manipulation attempts (if any yet!) and the error results in this same history! Create the link and copy/paste it back here in a reply. You posted a tool_id last time, which is helpful, but for these we need to also see the data.
→ Hands-on: Data Manipulation Olympics / Data Manipulation Olympics / Introduction to Galaxy Analyses
If you solved this already, please let us know! 