Songbook - Loading files - Songbook stops, Android 4.4.4 crashes

Android 4.4.4 Samsung Note 4 Current version of Songbook
When loading a file from Dropbox:
Problem 1:
Songbook Has Stopped Message
2nd and 3rd attempt may be successful.
Problem 2: If load is successful often only a portion of page appears, full page is displayed when selected in Songbook.
Problem 3:
Occasionally when Song book stops, it crashes Note 4, Note 4 must be restarted.
Note: Performance erratic, 25% of the time files load properly without error.