thanax

I had the same problem obviously with conflicting plugins. It was not necessary to deactivate all plugins, install another theme, activate it and then come back to the original theme with reinstalling the plugins again. Simple deactivation and reactivation of some plugins after updating them delivered the result that the two plugins “Wordfence” and “All in One WP Security” are in conflict. I decided to deactivate the second one and everything was fine again. My advise is hence not to use multiple security plugins from different sources. Good luck!

Hi esmi,

manual install of themes WORKS!
I tried it also when using my complex FTP approach.

Thank you for the help!

Have a nice weekend.

Best wishes,

thanax

Thank you, esmi. I have not tried the manual install yet, but I will do this a.s.a.I.c.
I think that I may have not uploaded the whole content of the WordPress. To tech the students with a free browser-based FTP client, I used https://ftp.net4india.com which allows the upload of quite large ZIP files when compared to other providers. But the drawback of this service is that it is extremely slow even for transmitting 6.7 MB ZIP file that is automatically extracted on the server side. I wished to let them know how to exploit such resources without having pre-intalled FTP clients on their computers (which is also not allowed at the university I work) such as Cyberduck and FileZilla. Our problem is also that we have to circumvent the forbidden exploitation of the FTP port 21 by our IT staff (which is OK for general purposes, but tell me how can i teach networking and design in a free manner without some way to use FTP. So, I found this net4india.com provider that obviously uses other FTP ports to transfer data. But I cannot check if everything was extracted at the server side. So I may try to use a proper ftp client on my computer to retransmit the whole ZIP pack and check if this problem occurs again. This PHP error message memes me thing that some PHP file is missing…. The strange thing is that the 4 default themes are working well after the WordPress installation. Only the new ones are striking. We’ll see. thank you for the peer review ??

I wil try this too. The idea was also to let the students register and manage their own domains from scratch (incl. FTP upload of the software, etc.). A WordPress.com site would provide everything ready to go and there would be less teaching effect, even if i do not want to go deeply into programming and networking. Students should learn that programs do not grow on the trees….

Yes, I understand. WordPress 3.9 is working fine with the environment I have privately as a payed service. But this demo was to let students play with the program. They would not be willing to pay something of that kind. Thank you for the reference.

OK, I will try this. But the strange thing is that this happens not only with this particular theme but with every other theme I want to install from the WordPress database. here must be something subtle in this software version, or in the functionality that the host provider offers for free, I guess…. I would appreciate any further comments on this.