just copy the SystemUI.apk from /system/app/ and put it somewere in ur ext sd card or internal memory( Use root explorer for this) before using this mod. Then use this mod... if things go wrong just copy back the systemui u backed up to /system/app/ with read write permissions rw-r--r-- .
What the developer had done is instead of modding just the recents he has made the modifications in his systemui.apk file and compiled it. i guess this is you guys are losing 23 toggles mod, transparent status bar etc and not able to use the rabukatze or vegeta mods . Since i am not a developer myself I am not sure how to mod the recents only without making modifications to existing Systemui. I had requested in this thread to OP that it would be useful if he had done it that way. But i think the developer is busy as there was no reply.
Just hope that the OP looks into this matter coz i love his works and would like to have it while retaining the existing mods on systemui.
after carefully reading through the thread, i noticed that most people were having problems with the 2D 3D issue and i came accros a reply that says and i quote "delete SystemUI.odex" but i personally renamed it including some few files that were nominated in here for elimination with the hope that this mod works great (as it is dooing now, flawlessly) and also keeping my original files (which in case of neccesity i )will delete the newly installed files and renaming back the original into their normal state...i'm yet to try that out, cos though i am thinking (now) to be a smart ass here, i might as well not taken notice of all the modified files beyound what was stated in here, which might still cause some instability in the system in case such files exist...i might not hv time, and not risking to loose all the mods done to ma phone now (cos it will be a pain in the ass really), so,
*my theory* :B
anyone who hasn't yet applied this mod, but willing to, should at least take a snap shot of the folder "Systems / App" and if possible, copying all the files in that folder some where safer before applying the mod.
After which, i guess, if u dont like it, rename the entire folder "app" which can be reached using "root Explorer" by opening "System / app" into may be...app_1 and re-copy back the folder u stored somewhere, and reboot ya system. you can do vice versa to hv the mod back.
*must do before flashing*
you can simply back up ya fon since u hvnt applied the mod yet, and reflash it back if anything goes wrong.