You didn't post a version number of BLS-2015. The initial release of BLS-2015 was 27.02.03; there has already been an update to version 27.02.04. If you are still on .03, update to .04 (with no league file open, go to Help > Check for Program Updates"). Always check for a newer version, and if something like printing suddenly stops functioning after some future update, do report on that. Always post a version number, so that an issue that's tied to a particular version can be factored for.
I do not guarantee that this will rectify things, as I can't call up a version history on the .04 download (I have reported the broken URL link).
Always check, download, and install the most recent update of your software to ensure that issues may have been corrected.