"node.dll missing error" is a known problem related to windows operating systems and not to bibisco.
On the web there are many articles (just googling "node.dll missing error") that suggest how to try to solve the problem.
As you can understand, I can not take responsibility for suggesting one in particular.
bibisco's users are sharing the solutions found here.
It happens if you open (not unzip!) the zip file and run bibisco.exe; this is clear from the fact that the bibisco.exe file does not have its icon:
Instead, you have to extract all the files contained in the zip into a folder. In this case you will see that bibisco.exe has its correct icon.