Alright, I did some testing and think I have a clue. Steps to reproduce.

1. Deleted all the extended themes and made sure they were gone from the template_configuration table.
2. Extended a single theme.
3. Queried the template_configuration table to find new template config row.
4. In the options field, the default logo is displayed as \"brandlogofile\""invalid:themes\\/survey\\/vanilla\\/files\\/logo.png\"
5. Notice where it says invalid. Possible clue?

Moving on.

1. Upload a new image.
2. Select image using drop down and click save.
3. In the options field, the new value for brandlogofile is \"brandlogofile\""invalid:image::theme::files\\\\usa_logo2.jpg\"
4. Notice where it still says invalid.

I am no expert in LS but it looks as though the relative root path has an issue. Could be mistaken. Leaving it to you experts to decide.

Regards

Can you please create a bug report on bugs.limesurvey.org with the detailed instructions? Thank you!

I understand that the impossibility to reproduce the issue is a major problem. I suspect that my installation is somehow flawed. I am considering installing another instance of LimeSurvey to see if the problem persists. Do you think this might help? As far as I can understand, you can have two different instances on the same server.

Yes, you can have several instances on the same server. Place them in different directories and use separate databases.

Finally, someone who managed to reproduce the issue! Thank you very much. I too suspect that this is a problem related to the relative path, but I am not sure. I hope that it will be resolved if reported as a bug. Strange, though, that no one else seems to have encountered this problem.

Could the problem with the relative path be caused because PHP LDAP library is not enabled or available?

No, PHP LDAP is for something completely different. If you do not use LDAP, then a missing PHP LDAP library should have no impact on the functionalities of your Limesurvey installation, despite not being able to use LDAP.

c_schmitz wrote:

Can you please create a bug report on bugs.limesurvey.org with the detailed instructions? Thank you!

Should a bug report be created by usautomatic who managed to reproduce the problem or should I create it?

Please file the bug report yourself. You have all of the details about it.

Still carrying out some additional tests before submitting the bug. When selecting theme options for the first time in a new test survey, a message I get six times reads the following (see the screenshot):

Error: Malformed JSON - field files_css must be either a JSON array or the string "inherit". Found "null".

These messages disappear upon saving the (survey) theme options and they do not appear again, however, when checking the logo field on the images tab, it reads:
Inherit [inherited value: invalid:image:theme::files\logo.png]

My guess: this behavior is related to the [wrong] values saved when extending a template and/or saving template options. Does this sound correct?

Just reminding my configuration:
Windows NT WIN-A34LDHDT6H4 6.3 build 9600 (Windows Server 2012 R2 Standard Edition) AMD64
PHP version 7.2.7
Web server software: Microsoft-IIS/8.5
Database driver version: mysqlnd 5.0.12-dev - 20150407 - $Id: 38fea24f2847fa7519001be390c98ae0acafe387 $
LimeSurvey version/build: 5.2.6/211213

 

I am trying to report the bug, but I get the following:

APPLICATION ERROR #plugin_Discord_ERROR_CURL

The request to Discord didn't go through. Check your webhook URL. Also make sure there are no unusual characters in your bot name or bot icon settings. Further details may be printed below this box.

Please use the "Back" button in your web browser to return to the previous page. There you can correct whatever problems were identified in this error or select another action. You can also click an option from the menu bar to go directly to a new section.APPLICATION ERROR #plugin_Discord_ERROR_CURL

The request to Discord didn't go through. Check your webhook URL. Also make sure there are no unusual characters in your bot name or bot icon settings. Further details may be printed below this box.

Please use the "Back" button in your web browser to return to the previous page. There you can correct whatever problems were identified in this error or select another action. You can also click an option from the menu bar to go directly to a new section.