After installing the AnimatedSvenemies plugin, I tried to put an animated enemy but when my character tries to hit the enemy he jumps this error can not read property 'height' of undefined. I have tried to disable all the plugins.
'MV School' is a place where various "lessons" (interactive tutorials) will be posted. It is not for asking Support questions.
Could you please edit your opening post to include a link to the page on Yanfly's website where you got that plugin. That way, if anyone who wants to help you needs to check something, they don't have to go hunting for it.
It's not Yanfly's plugins that are out of date. This problem happens when you use the later versions of the plugins but are using a very early version of the core files. When you start a project in an old version of MV, and MV gets updated and you don't manually update all of your existing projects. Your projects are still at the old version, even though you are opening them in the new editor. The plugins require stuff that is in the newer core files but was not in the older ones.
Oh. Yes, confirmed. The issue used to occur when using an old version of Yanfly's plugins shipped with MV, as they tried to reference the old objects in the newer base code, but it seems those plugins have been updated sufficiently now that the error no longer occurs. Edited my post above, the link's still relevant.