ROM MANAGER won't work for me!!!!

[stparker38]

I have rooted and flashed my EVO with a custom rom. I downloaded Rom Manager from the market and did the initial flash. It will do all of that fine, but when I try to install from sd from Rom manager or even download a new Rom it will allow everything but then give me the picture of the phone w/the red triangle symbol....prompting me to connect to computer and run the recovery-windows.bat

I went back to stock...followed the full root instructions again (no issues with any of that), however whenever the screen says that my phone should automatically reboot into recovery, it doesn't it gives me the screen where I have to plug to computer.... any suggestions for where I may have gone wrong or what am I missing?