Can't install any plugins that involve uploading to server

[MistViper]

So here's my issue, when I try and install plugin's onto VB there's always some sort of error. I upload the 'upload' files to the forum directory, which is where it is specified to be uploaded to. I then attach the proper .xml file and install the plugin. For one of the plugins it dind't even install saying the file didn't exist, it was the same but for some reason the root of the file it was looking for did not have the /UPLOAD part that mine had. Secondly for another which was the 'Helpful Answers' plugin, it installed properly but the thumbs up and thumbs down images were just vertical rectangles, and when I clicked on them there was an error saying to check the file on the server. Please help me, I've been working real hard on my forum and I just need to get these plugins installed before I can launch the forum to the public. I appreciate any help, I have attached where I upload the files on filezilla, don't mind that it's not connected to the server in that screenshot, I connect before uploading.