There is nothing suspicious here about the filename ( it was an example here, but it has the same effect with a file containing the description oof the paper + all the authors ). I am almost sure that it is related to size of the path + filename that is not correctly handled . But i can't spot where is it in the source code .
Am i the only one to see that issue? ( one thing also iis that i am running web2py on windows , but i dont think that it is the issue here ) M