You can't be install recovery that way, you need the modified twrp made for hboot 1.5.

 

http://forum.xda-developers.com/showthread.php?t=1239821

 

ok im also in the same boat here .. im "unlocked" but I don't know why but I cant get su (superuser) to push ..

i installed it from the marker but it does not let me get su rights or get to system apps

I have since unpluged my phone so its still unlocked . am i able to plug it back in and get back to the MSdos to they to repush everything

I am surprised that there is not a step by step for 1.5

 

first, installing su from the market doesnt make you have root access.

now this is what you need to do, do u have windows linux or mac?
go here: Android SDK | Android Developers
and download the correct file for your os.
if you are using windows, dont use the exe, download the zip file.

once downloaded, extract the file to the root of your hard drive, here is a guide i wrote for this: http://androidforums.com/evo-3d-all-things-root/406577-android-sdk-windows-based-guide.html

next, download the modified twrp recovery and su in the xda guide
put the twrp file in the toold folder of the sdk file you just extracted, this file will be named recovery.img

now, connect your phone to the pc, under menu settings apps development, make sure usb debugging is checked

open a command prompt

cd to where you unzipped the sdk tools, if you followed my guide you need to issue the command cd c:\android\sdk\tools

Make sure fastboot is off menu settings power uncheck fastboot. Power off. power on using volume down and power to boot into bootloader

then issue fastboot flash recovery recovery.img

this should go through and you will now have custom recovery

you can test this by issuing fastboot reboot recovery and you should reboot to twrp recovery.

make a nandroid

mount sdcard in the mounts and put the su file in the root of your sdcard

then flash zip and you will have su privileges.

report back with any errors

 

Don't go through adb
Put all commands and files you need in the folder with adb
Fastboot will push the recovery you don't have to have it on the sdcard first.

 

if you noticed in the instructions i gave, i used no adb commands, dont just do what you want, you are unlocked through htc, you did not get su installed from revolutionary.

you are not rooted just unlocked that is why you need to go through fastboot