jDownloads 4.0 installation fails

[Arno]

Maybe on the second Page?

Your developer should do this.
I am not in my Office in the moment. More later.

[Arno]

You should try this settings. See pic.

[Chamira]

Hello Arno,

I can confirm that after disabling the items you have listed in the screenshot above (and enabling the others) I was able to install the pre-beta version. 

Previously, enabling Content - jDownload 3.9 plugin gave the error

Code Select Expand

Call to undefined method Joomla\CMS\Application\AdministratorApplication::isSite()

After the installation we can enable the Content - jDownload plugin without any errors.

[Arno]

Thanks for the result.

Call to undefined method Joomla\CMS\Application\AdministratorApplication::isSite()

I will test and fix this.

[Arno]

Okay. I have it tested now.
Upgrade from 3.9.8.6 to 4.0.2 pre-beta after Joomla upgrade to 4.2.x.

State before upgrade:
- jDownloads System Plugin: disabled
- all other jDownloads Plugins are enabled
- all jDownloads Modules are enabled

The upgrade works successfully without any error message.

I must therefore assume that your problems are related to the state of your Joomla and/or jDownloads installation and therefore the cause is probably not a general error.

Therefore this bug report is now closed.

If you find new bugs, please create new topics for them.