Whenever I try to install this mod I get an error in the Display.PHP, I don't know what cause this, but it may be my modifications, here is a list of what modifications I use:
1. Member posts recount 0.5 [ Uninstall ] [ List Files ] [ Delete ]
2. Membergroup Color Legend 1.1 [ Uninstall ] [ List Files ] [ Delete ]
3. Hide Board 1.0 [ Apply Mod ] [ List Files ] [ Delete ]
4. Gender On Registration 1.0 [ Uninstall ] [ List Files ] [ Delete ]
5. Group Post Color 0.8 [ Uninstall ] [ List Files ] [ Delete ]
6. Member Color Link 1.8.7 [ Uninstall ] [ List Files ] [ Delete ]
7. Automatic BBC 1.0 [ Uninstall ] [ List Files ] [ Delete ]
8. Seo 4 SMF 0.2 [ Uninstall ] [ List Files ] [ Delete ]
9. Country Flags 1.0.1 [ Uninstall ] [ List Files ] [ Delete ]
10. SMF Staff Page 1.3 [ Uninstall ] [ List Files ] [ Delete ]
11. Global Headers Footers 1.3 [ Uninstall ] [ List Files ] [ Delete ]
12. GeSHiSmf 0.1.0 [ Uninstall ] [ List Files ] [ Delete ]
13. Reg Bar 1.0 [ Uninstall ] [ List Files ] [ Delete ]
14. User Email System 1.1.3 [ Uninstall ] [ List Files ] [ Delete ]
15. Contact Page 1.0 [ Uninstall ] [ List Files ] [ Delete ]
16. Googlebot & Spiders Mod 2.0.2 [ Uninstall ] [ List Files ] [ Delete ]
17. Global Announcements 1.0 [ Uninstall ] [ List Files ] [ Delete ]
18. New Topic Button 1.0 [ Uninstall ] [ List Files ] [ Delete ]
19. Karma Description Mod 1.9.7-2 [ Uninstall ] [ List Files ] [ Delete ]
20. Single Category 1.4 [ Uninstall ] [ List Files ] [ Delete ]
21. Enchanced post template 1.0.2 [ Uninstall ] [ List Files ] [ Delete ]
22. Admin Modification Menu Section 1.0.2 [ Uninstall ] [ List Files ] [ Delete ]
23. Packages Directory 1.0.1 [ Uninstall ] [ List Files ] [ Delete ]
24. cbi, 0.5 0.5 [ Uninstall ] [ List Files ] [ Delete ]
25. Spam Me Not Mod 1.02 [ Uninstall ] [ List Files ] [ Delete ]
26. SMF 1.1.1 Update Package 1.1.1 [ Apply Mod ] [ List Files ] [ Delete ]
27. Mod List Color Alternate 1.0 [ Uninstall ] [ List Files ] [ Delete ]
28. PM On Registration 1.0.2 [ Uninstall ] [ List Files ] [ Delete ]
29. Board Notes 1.0.5 [ Uninstall ] [ List Files ] [ Delete ]
30. Mod List Color Alternate 1.0 [ Uninstall ] [ List Files ] [ Delete ]
31. RedoPackageAction 1.1 [ Uninstall ] [ List Files ] [ Delete ]
32. PhpInfo 1.1 [ Uninstall ] [ List Files ] [ Delete ]
33. Admin Notepad 1.0 [ Uninstall ] [ List Files ] [ Delete ]
34. SMF File Manager 1.0.2 [ Uninstall ] [ List Files ] [ Delete ]
35. Advanced Visual Verification 1.1 [ Uninstall ] [ List Files ] [ Delete ]
36. Custom Board Sort 1.0 [ Apply Mod ] [ List Files ] [ Delete ]
It doesn't look TOO major.
Go ahead and do the install with the package manager. (Backup first of course) Then open Display.php and make the two edits that it requires. The first is pretty basic but you may well have added a mod that bumps into it. At the most it will take some guesswork but you can figure it out. Simply open your package manager from the admin control panel and opt to view the files for the 1.1.1 upgrade, find the parts that are changed (replaced in this case) in the display.php file (in the mod file in case you're curious) and then put the replaced or added text where it needs to go.
As you have a bunch of mods installed no one really knows what your files look like besides you but it shouldn't be too too difficult.
I just installed it, nothing seemed to happen. I'll look in my error log though.
And don't forget to make the manual changes to the Display.php file as needed. It shouldn't be too tough really.