So far the most common bug seems to be with the installation of BatchProcess. Find below a list of currently known bugs and their solutions. If you find any other bugs please report them.

I cannot get past the Please Install .Net Framework screen

Some people have reported not being able to get past the .net framework installation screen, as it either fails to download or does nothing at all. To bypass this simply download and install the .net framework 3.0 manually from here.

Toolbar not appearing once installed

This seems to be an issue with people choosing the wrong version of BatchProcess for their version of SolidWorks, regardless of the OS version.
When installing, BatchProcess registers itself with COM, effectively creating the following registry entries:

[HKEY_LOCAL_MACHINE\SOFTWARE\SolidWorks\AddIns\{e98ce560-dda8-4f91-8e97-a540c7f371ea}]
@=dword:00000001
“Description”=”BatchProcess”
“Title”=”BatchProcess”

But, running the installation without administrative permissions may cause this stage to fail.
Also, running a 32bit installation of BatchProcess on a 64bit machine causes this process to redirected to a sub-registry (known as the 32bit registry) on an x64bit machine. This is fine if you intend to run SolidWorks 32bit and BatchProcess 32bit on a 64bit operating system, but in any other case this is erronous behaviour. Make sure you use the same version of BatchProcess as SolidWorks, not the Operating System version.

If all else fails, save the following code to Notepad, save as fix.reg, then double click the saved file to manually add the entries to the registry. Once your computer has restarted the toolbar should appear in SolidWorks.

Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\SolidWorks\AddIns\{e98ce560-dda8-4f91-8e97-a540c7f371ea}]
@=dword:00000001
“Description”=”BatchProcess”
“Title”=”BatchProcess”