Win7 x64, 5870, Catalyst 11.7, latest GUIMiner (Phoenix 1.5).
After copying v2.0 files into "kernels\phatk" i get this messages in console:
2011-07-29 11:02:49: Listener for "itzod2": [29/07/2011 11:02:49] [4.19 Ghash/sec] [0 Accepted] [0 Rejected] [RPC (+LP)]
2011-07-29 11:02:50: Listener for "itzod2": [29/07/2011 11:02:50] Warning: work queue empty, miner is idle
No work is being done.
Here's miner starting parameters:
2011-07-29 18:08:49: Running command: .\phoenix.exe -u http://****:****@lp1.itzod.ru:8344 PLATFORM=0 DEVICE=0 AGGRESSION=12 -k phatk VECTORS BFI_INT FASTLOOP=false WORKSIZE=256
Your v1.0 and Diapolo's 2011-07-17 kernel works fine.
This is exactly what happens to mine too. guiminer 7-01-2011 with phoenix 1.5, using newest kernel in this thread, catalyst 11.7, win7 x64.
It just spams "Warning: work queue empty, miner is idle" in console.
I'm going to assume this kernel is either meant for an older miner, or its just plain broken. I'll be looking at this thread and diapolo's for an update. 12alu improvement is huge

, might be able to break 470 mhash on my 5870.
edit: I thought you had to declare kernel arguments -after- the -k switch and argument after to declare what kernel to use.
this is an old bug of phoenix that the author was not able to fix. Try search for idle bug. It is not the problem of this kernel.