When attempting to submit a comment referencing multiple lines in a code review, I receive this error:

A java.lang.IllegalArgumentException was encountered

The value '293, 299, 305, 311, 317, 323, 329, 335, 341, 347, 353, 359, 377, 383, 389, 395, 401, 407, 413, 419, 425, 431, 437, 443' for the property 'lineRange' is too long. It should have a maximum length of 100

This is under release:
CR2.10.3 FE2.10.3 (20130318234358 2013-03-19)

This appears to happen whenever the serialized list of selected lines is longer than 100 characters.