Cyanogenmod 12.1 Google Play not working

Hello, I've flashed cyanogenmod 12.1 onto my galaxy S4 and installed gapps, but getting a Google play has stopped along with other Google services. Can anyone let me know what I'm doing wrong? Steps I did:
1. Go into recovery
2. Wipe data/factory reset
3. Installed cm-12.1-20150927-NIGHTLY-jfltexx.zip from download.cyanogenmod.org
4. Install gapps from opengapps.org (ARM/5.1/Nano)
5. Wipe cache partition
6. Wipe dalvik cache
7. Fix permissions
8. Reboot

Thanks!