Update: A couple notes from my personal experience with 6.20 TN-A (HEN) and a PSPgo: The first run it worked fine — HEN loaded no problem and behaved as it should. Consecutive runs thereafter (from a cold boot) always failed. To get it working again I uncommented the following line in hbl/hbl_config.txt:
override_sceIoMkdir=-1
Works again! … despite the memory leak error.
Here are some tips if you’re experiencing crashes and/or other problems:
1. Backup whatever you want to keep from your memory stick, format it, and start fresh. Download everything you need and pack that freshly formatted stick. Restore your save games and whatever else after the fact.
2. Fiddle with hbl/hbl_config.txt. Try changing the different overrides and other configurable options.
3. Clear out your ms0:/seplugins folder. Some plugins may be incompatible with 6.20 TN-A.
4. Disable vMenu (VisualMenu) if you’re using it.
5. Sift through the comments. You aren’t alone. Many users are reporting crashes but also reporting fixes/workarounds. Take your time and read on.