After upgrade to 7.2.7 problems themeswitcher and left navigation disappeared

We didn't touch those functions in .07, can you provide more details from error log? If not send a PM with login details to your site for further investigation. I won't be around so much to check so if any other admin wants to check this please post.

OK, I got back my navigation panel. I had to use css_navigation_panel, I still was using navigation_panel.

I think something goes wrong in setting the theme.

I now took the maincore from 7.2.5 and added this from 727:
[syntaxhighlighter brush=html,first-line=1,highlight=0,collapse=false,html-script=false]// Checking file types of the uploaded file with known mime types list to prevent uploading unwanted files
if(isset($_FILES) && count($_FILES)) {
require_once BASEDIR.'includes/mimetypes_include.php';
$mime_types = mimeTypes();
foreach($_FILES as $each) {
if(isset($each['name']) && strlen($each['tmp_name'])) {
$file_info = pathinfo($each['name']);
$extension = $file_info['extension'];
if(array_key_exists($extension, $mime_types)) {
if($mime_types[$extension]!=$each['type']) {
die('Prevented an unwanted file upload attempt!';
}
} /*else { //Let's disable this for now
//almost impossible with provided array, but we throw an error anyways
die('Unknown file type';
}*/
unset($file_info,$extension);
}
}
unset($mime_types);

}

[/syntaxhighlighter]

and this:
[syntaxhighlighter brush=html,first-line=1,highlight=0,collapse=false,html-script=false]// Scan image files for malicious code
function verify_image($file) {
$txt = file_get_contents($file);
$image_safe = true;
if (preg_match('#<?php#i', $txt)) { $image_safe = false; } //edit
elseif (preg_match('#&(quot|lt|gt|nbsp|<?php);#i', $txt)) { $image_safe = false; }
[/syntaxhighlighter]


But something is changed in setting the correct theme. For that I left the 725 code as is and then it works for me now.....

There are more changes made to maincore.php in .07, modify at your own risk.
Try to re-download the full .07 pack and replace all files

OK Thanks for your help!