I would recommend to download latest 721_EXT kernel files from SMP and put them in the download directory.
Files to download :
1. SAPEXE SAR file
2. SAPEXEDB SAR file
3. latest tp
4. latest r3trans
Please remove any old SAPEXE* , tp, r3trans file from download directory.
In the first error scrrenshot , it was saying that you have a r3trans version which was released in July and needed a r3trans version which was released in november or later so only downloading the latest 721 r3trans would have solved the issue.
Once done, repeat the phase.
Regards,
Gaurav