In a project of mine, one of the staves, whenever I put anything in it that isn't a full bar rest throws up a "cannot resolve rest collision: rest direction not set" error. It will still render but it any note written is doubled as you can see below on the third staff from the bottom
However, when I copy and paste the entire file into lilybin, it works fine with no errors, as you can see here. Is this because I am using some outdated syntax somewhere and lilybin is running an older version of lilypond? The code in the lilybin is exactly copy and pasted from what I am doing in frescobaldi.
The log given by frescobaldi is
/Users/Jack/Desktop/Sorabji Quintet/Quintet.ly:48:6: warning: this Voice needs a \voiceXx or \shiftXx setting
r8
d''
Finding the ideal number of pages...
Fitting music on 1 page...
Drawing systems...
/Users/Jack/Desktop/Sorabji Quintet/Quintet.ly:48:3: warning: cannot resolve rest collision: rest direction not set
r8 d''
/Users/Jack/Desktop/Sorabji Quintet/Quintet.ly:48:3: warning: cannot resolve rest collision: rest direction not set
r8 d''