Yast2 modules will not load in SLES

*one*

Yast2 modules start to load but then suddenly exit with no on screen errors.

Looking at /var/log/YaST2/y2log reveals the following perl errors.

Perl wanted to die: Can't locate YaPI/*******.pm in @INC

*Two*

ncurses modules works but the GUI does not.

In some cases the problem has been associated with the “/root/.Xauthority” file. Some users have reported deleating the .Xauthority file and reopening yast failModule to fix the issue.

In the event that does not work follow these steps to troubleshoot.

1) First identify that you have the following issue by opening the failed module. For example: “yast2 users”.
2) Next check the /var/log/YaST2/y2log for errors shortly after the model loads. Below you will see an excerpt from the module users. Note the failure in this following example.

users/complex.ycp:274 Perl wanted to die: Can't locate YaPI/MailServer.pm in @INC

BEGIN failed--compilation aborted at /usr/share/YaST2/modules/UsersPluginMail.pm line 21.

Compilation failed in require at /usr/lib/perl5/vendor_perl/5.10.0/x86_64-linux-thread-multi/YaST/YCP.pm line 413.

BEGIN failed--compilation aborted.

clients/users.ycp:222 Users module finished with false

The module “users” failed because yast could not locate MailServer.pm “Can't locate YaPI/MailServer.pm”

3) Locate the MailServer.pm with one of the following 2 methods on a working system. If no working system is present try looking for the missing Parent package by running

rpm -qa | grep yast2-users

rpm -q --provides yast2-users-2.17.28-1.52

In this example the the following  was returned:

package MailServer is not installed.

Otherwise on a working system locate the .pm by running:

llinux:/var/log/YaST2 # locate MailServer.pm

/usr/share/YaST2/modules/YaPI/MailServer.pm

or

find / -name “MailServer.pm”

4) In this test case the file did not exist on the failed server but did on a working one.

5) Verify what package owns “MailServer.pm” on the working system with:

rpm -qf /usr/share/YaST2/modules/YaPI/MailServer.pm

yast2-mail-x.x.x.x-x

6) Reinstalled the missing package. In this case it was yast2-mail. Run yast -i yast2-mail