I had to disable the extended tool bar for quick replies otherwise there were compatibility problems with the latest version of Chrome and the space bar didn't work anymore. Now oddly even the basic tool bar doesn't show up. I contacted vBulletin. They knew about the issue, but since vBulletin 4 is no longer supported, they are not going to fix the problem. One solution would be to upgrade to vBulletin 5, but despite the fact that it has been released for nearly 5 years, it has much less plugins than vB 4. For example we could not be able to use the Experience plugin anymore, with the points, levels, activity, awards and achievements. I am not sure there is a plugin to give + or - votes for individual posts either. vB4 is generally regarded as better than vB5, and that's why most other forums still use it. Another possibility would be to get XenForo or IPS instead. That's something we could discuss here.