Productivity Power Tools middle-click scrolling inexplicably disabled?

I was excited when I first found and installed the Productivity Power Tools extension for Visual Studio 2010. I particularly liked the line-highlighting, tab coloring, solution navigator and middle-click scrolling. Unfortunately after the first hour or so it was clear that the “quick find” was terrible (can’t copy/paste into it, what’s up with that?) so I turned it off in the settings and restarted Visual Studio.

Once VS refired I opened up my solution and middle clicked the (obnoxiously long) open document, hoping to casually drag my mouse downwards and scroll towards the bottom.

Instead, to my dismay, nothing happened. It appears as though my middle-click scrolling has now disappeared!

“Strange”, I thought, as I went about toggling the settings and restarting Visual Studio, hoping to kick it back into gear.

Alas, it proved to be a fruitless effort.

“I’ll just reinstall the whole darned extension then!” I muttered grumpily. Still I proceeded, determined to get my middle-click scrolling back.

VS fired back up again and, most surprisingly, middle-click still did nothing! (But naturally the offensive “slow find” was back in action.)

Unfortunately, as of yet, I have not found a reason or a solution for middle-click scrolling d开发者_StackOverfloweciding to take a vacation. So if anyone has experienced anything similar and as any advice, I’m all ears.

1) Open C:\users\USERNAME\AppData\Local\Microsoft\VisualStudio\10.0\Extensions\Microsoft\Productivity Power Tools\10.0.20427.10\extension.vsixmanifest in the xml editor or notepad

2) In the Content tag, add the following line:

<MefComponent>Microsoft.PowerTools.MiddleClickScroll.dll</MefComponent>

The above worked for me.

I have this same problem.

It appears that it's a known issue: Enhanced Scrollbar and Middle-click scrolling share dependencies. I'm sure at one time or another, I disabled the enhanced scrollbar, and doing so borked the middle-click functionality. See this thread, specifically the post by user AltGr entitled "Bug: Options Middle-Click <-> Enhanced Scroll Bar".