Hi,
        I have installed dnn 5.6.1 and few modules  .For making my sites bilingual I installed Ar-Jo language pack.Everything was working fine.When I tried to install CKEditor provider , I got the following error by my mistake

"This package does not appear to be a valid DotNetNuke Extension as it does not have a manifest. Old (legacy) Skins and Containers do not contain manifests. If this package is a legacy Skin or Container Package please check the appropriate radio button below, and click Next.".

This happened because I browse not for the right installation package.After Identifying the problem ,i Installed it successfully.But when I returned ,I found that the Admin /Host   menu's (coming on top) alignments have gone wrong  and the all items are scattered on the page(see the drop down lists ,they also have problem,instead of arrow test'select is coming)).When we minimize it everything is fine .I have attached a screen shot for reference.Does this happen because of the installation ?Please help me.

for screen shot -   http://i52.tinypic.com/f5agk5.jpg

                                                                                                Thanks,
                                                                                                       Sabu