1. i get error message "unable to start plugin: <dll name>.dll - Dll entry point: MusicBeepPlugin.Plugin was not found", when i try to add plugin .zip (by clicking 'add plugin' button), which contains auxiliary dlls (without "mb_" prefix) in the root of zip and "mb_*.resources.dll" (it doesn't contain any code, only resources) in "ru" subfolder of zip. mb copies main plugin dll "*.dll" instead of "*.resources.dll" to "Plugins\ru" folder.
2. as far as i understand, "add plugin" button had been added for mb store version mainly, because it's the only way to install plugin in this version. similar functionality had been added to mb for installing other mb add-ons (eg. skins). but unlike other types of add-ons there is no way to delete installed plugin in mb store version. it would be great if "uninstall" button next to plugin in prefs> plugins deleted plugin files also, along with calling plugin's Uninstall() function and unloading plugin. of course, only if plugin had been added by using "add plugin" button, not manually.
3. there is no obvious way to update installed plugin in mb store version. i get error "failed to save plugin due to the following error: forbidden data found on decoding" if i try to re-add updated plugin .zip. the only workaround is to disable plugin, then restart mb, then re-add updated plugin.
these issues concern mainly mb store version, but it would be great if they are fixed for all mb versions.
p.s. english wording of error messages may differ from what i've written, but common sense is the same.