There is definitly something wrong with your installation or with your PSP, I play the game since WTH 0.1.0 and I can assure you that this version has far less lockup than any other prior version.I am running 5.00 M33-6 after trying GEN D3 and realizing that was not good for Wagic.
I installed 0.11.1 on a new memory card (only game on it) and the image files that were in the card sets forum.
After about two hours of messing around, here are the bugs I found:
1.) NUMEROUS total system lockups for no specific reason. I've dumped one of them and can upload it if needed.
2.) My entire 65 card deck (well all but one or two cards) vanished after buying some 2E cards in the shop (Black Lotus and a couple moxen). The card images were still there but it showed 0 for how many I had. After I exited the deck builder and came back the images were now gone (as were the cards). This has happened twice now both times after going to the shop to buy cards.
3.) Thicket basilisk is being blocked by a War mammoth and Giant Bear. It gave me a choice where to put the damage but I could only seem to put the 2 points of damage on one or the other not one on each. I put both on the mammoth (3/3) and it lived!
4.) All the images for the cards in my deck in the deck builder totally disappeared and then the PSP locked up. This has happened about four times in a couple hours.
5. Elven Riders are supposedly only able to be blocked by fliers and walls. A War Mammoth blocked mine and killed it. I took the Elven Riders out of my deck when I saw that.
So far, this version is way more unstable that the 0.9.6 version that Nightcrawlr did. That one locked up on occasion, but 0.11.1 is locking up way too often.
Any hep would be greatly appreciated as I love this game.
I know you are supposed to have a clean install, so you should have WTH 0.11.1 showing on the top right of your screen. In addition check that you DID not copy the _cards.dat from any prior version to your sets folder (to be sure you shoudl redownload a clean copy of WTH011.1 and copy the whole set folder to your PSP again, if you have images installed they will not be overwritten, but it will overwrite the _cards.dat and ensure you have the primitive). When you copied the images you should only copy the zip file not the entire folder. + ensure you have the "primitive" folder with the "mtg.txt" somewhere... it look like if your definition of cards is not correct because thicket basilisk should definitly work.
Please ensure you have a clean copy, because the bug you are reporting are unusual !