I just installed HotFix 3 on a 24.4.0 environment with Rhat 9.5. DB (UC_UPD.TXT) update without any error.
First cold start did an crash dump.
./ucsrvwp ucsrv.ini -parm"StartMode=COLD;SystemStop=YES"
UC4 WP-Server Version 24.4.0+hf.3.build.1748423189162 (PID=588547)
SERVER=UGFCA#WP002
*** PRIMARY(UGFCA#WP002) ***
Exception Handler catched Signal 11 (SEGV) at (nil) with code 128. Aborting.
Aborted (core dumped)
The WP Logfile was normal until the crash
This was the file from broadcom download Automation.Engine_AutomationEngine_Linux_24_4_0+hf.3.build.1748423189162.zip
So i switched all back to 24.4.0 and wait for HotFix 3+ :)