I'm also trying to install the new Blade update. I'm also running on a 5.1.2 server, but I have updated the PHP already.
The message I'm getting is:
Check for package conflicts There are package conflicts with the SMEServer-5.1.2_Update1 blade
error: failed dependencies:
php >= 4.1.0 is needed by horde-2.0-3es
php >= 4.1.0 is needed by imp-3.0-2es
php >= 4.1.0 is needed by turba-1.0-4es
php-imap >= 4.1.0 is needed by imp-3.0-2es
If I connect with a console and query the php status on PHP I get
[root@E-smith-FW /root]# rpm -q php
php-4.1.1-2
which means the php version is >=4.1.0
Help please
Regards