Thanks for the help I installed it. But I can't see if it worked right now.This is generally either due to an issue with the plugin itself such as being outdated, or due to another plugin trying to use the same command:
25.04 12:03:24 [Server] INFO org.bukkit.command.CommandException: Unhandled exception executing command 'mvp' in plugin Multiverse-Portals v2.4-b548
Please make sure that nothing else installed uses the '/mvp' command, and make sure that MultiVerse-Portals is up to date for 1.8.8. The latest version on dev.bukkit.org for example is 2.6-b725, whereas you have 2.4-b548 installed.
To save ram I put the spawn in the Minigames world.Whether MultiVerse causes issues or not is entirely dependant on the setup of the server - the plugin itself is perfectly fine as long as there is enough RAM to handle the extra world(s) being loaded and that you don't go overboard with it and remove worlds when not in use (as an example I have seen servers with 30+ worlds being loaded due to old worlds never being removed, on hardly any RAM, and people wondering why it wouldn't work....)
one more thing this is a 1.9.2 serverOn testing the latest stable versions of WorldEdit, MultiVerse-Core and MultiVerse-Portals that are 1.8.8 compatible on a 1.8.8 server I do not have any of these issues. The portal blocks face fine when I set them and it always teleports me to where I set the destination, so I am unable to replicate this issue. Note that if you are using BukGet to install the plugins the latest MultiVerse-Core is their 1.9 update, you need to backdate to the version before.
You should be able to remove the sideways portal blocks, select the area in the portal frame with worldedit and simply do '//replace air portal'. You can use anything as the portal however if they are causing issues, it does not need to be portal blocks - air works fine, as would anything that can be walked through.
The randomly teleporting to the wrong place and suffocating is unlikely to be something we can help with as it is more likely to be a bug in the plugin itself or an incompatibility with something else that is installed. All I can suggest is to set the portals spawn destination again.
I will get on that soon would it be better to give you the file accessCould you post all your plugin versions and server jar aswell as any errors in your console upon server start and any errors upon people using the portal or you creating them. Will help get a better understanding of it.
I am bad at understanding error code. To me if the plugin works I am fine with it.Ideally yes but I'd prefer you to get into habit of getting the information due to the security risks of giving me direct access to your files, end of day you don't know me or what I'd do on them.