Hello Stephan,
Can you provide a screen shot of your problem?

This is on your own profile. you look those of some others is that good

and here are not multiplexed on?

I miss also a set of tools.
* links.
* Admin tools.
* Local.

Please provide the url of your site and have you enabled ow_debug on your site?

I have these folders which folder should I change?.

/ow_libraries/smarty3/debug.tpl.
    
/ow_libraries/smarty3/plugins/modifier.debug_print_var.php.
    
/ow_libraries/smarty3/sysplugins/smarty_internal_debug.php.
    
/ow_libraries/smarty3/sysplugins/smarty_internal_compile_debug.php.
    
/ow_utilities/debug.php

Topic was moved from Installation Troubleshooter and Server setup.

now to enable debug go to folder and look for  ow_includes/config.php

Open that up in edit mode and scroll to the bottom block and enable debug mode there. Once Enabled Save the file.

+1 Joshwho

Stephan, as to the notice you just neglect it, it won't do any hurt to your website. 

You can disable debug mode to make it go away. 

As to the profile toolbar, please disable plugins which has anything to do with the profile of website users. Like, profile cover plugin, I see the slideshow there on the screenshot, and see if the issue persists. 

Quote from Stephan I miss also a set of tools.
* links.
* Admin tools.
* Local.

as to this one? what links, admin tools and local are you referring to? please make screenshot and not from your photo camera as it is hard to see the image. 

It works again. Thank you so much

What was the cause of the problem? What did you do to fix the issue?

Please provide the solution, I believe it will be interesting to other community members.