I did ask for a screenshot of your FTP client pointing to your customs folder inside your PS3 and the region of the RB3 disc you are using.

Songs showing up means that your dta file is at the right place (at last?), but songs not loading could be alot of different problems. When you are in the song list, do you see the album art (i.e. NOT a white image), can you hear the song preview? Did you install the right RAP file and did you renamed it to the required name for your region? If you want help, I need answers and I need that screenshot, ignoring this will just make things harder for me and you.

Taken from the guide :

“On your computer grab a USB stick and create a folder called “exdata” on the root of your USB (the first or top-most folder). In the /bin folder of C3 Con Tools, you will find a file called “ps3.rap”. Copy that to the “exdata” folder you created on your USB stick, and rename the file to “UP8802-BLUS30463_00-RBHMXBANDCCFF0D6.rap”. Next, install PSNpatch on your PS3. Once installed, plug your USB stick into the left most port on your PS3, run the program, and press L1. This should install the rap file.”

As you can see, they do tell you to rename the file. This is from the NTSC portion of the guide. The only difference with the current C3 CON Tools version is that now we have 2 rap files, the onle you want is called “ntsc.rap” instead of “ps3.rap”. You said that you followed the instructions to the letter, but your actions says otherwise.

Now you are mixing things with Green Day. What are you saying? Are you saying that most custom songs works fine? If yes, then you are set. A very few songs do not work when converting to PS3 for unknown reasons. You can try changing the encryption type when converting from xbox format, but that’s all you can really do, unless of course you want to learn how authoring and stuff works, where you can try more things. Sadly, to know if a song works on PS3 you cannot rely on people saying it works on X360 (you have to understand that the big majority of users are using an xbox).

Regarding the screenshot: the converter uses by default the Rock Band 2 Free Pack folder which is “HMX0756” and you are apparently using “HMX0781”. The way that PS3 works is using encoded midi files in edat format, and they are encoded with a specific K-license and rap file for a specific folder so the only way that would work is changing the used rap file in “(root of C3 CON Tools)/bin/rap” and editing the klic.txt file with the k-license for that folder. Stick with RB2 Free Pack folder for simplicity’s sake, the rap file for it is included. You also want to make sure RB3 is updated to latest version as the convertion process was tailored for that version. Also, if you did change the rap file and modified the klic.txt file for idk what reason I suggest you re-download C3 CON Tools to roll back to the OG files.

To be honest, I’d suggest starting from scratch. Delete your customs on your PS3. Install the rap file (renamed as shown above), redownload C3 CON Tools to be 100% sure you have the right files, and re-convert your customs from Xbox format to PS3, and then move them to HMX0756/songs. Just doing this should work. Also, just for information, if you download any customs on this website already converted in PS3 format, they are encoded for the HMX0756 folder, they won’t work anywhere else, that’s just another good reason to not change the used folder.