Index error on run of acre

[serbinsh]

Starting this as a new issue to close #4 since that issue is complete, and this is likely unrelated

[sserbin@modex acre]$ python2.7 acre_driver.py --plotmode --eval-id=fates_brazil_test --test-hist-pref=/data/Model_Output/fates_testing/BR1x1_b00a5b0_1511028495/run/
Plotting is ON
Regression Testing is OFF
Site: 1x1_brazil was located in the restart grid
Processing File Timing information

Dimension information for history files

Traceback (most recent call last):
  File "acre_driver.py", line 783, in <module>
    main(sys.argv)
  File "acre_driver.py", line 656, in main
    hdims.timing([test_h0_list[0],test_h0_list[1],test_h0_list[-1]])
  File "/data/sserbin/Modeling/acre/acre_history_utils.py", line 549, in timing
    yrz,moyz,domz,hodz = hist_dateint_to_num(yyyymmdd_z[-1],sec_z[-1],db_z[-1,:])
IndexError: index -1 is out of bounds for axis 0 with size 0

This happens if I try to run acre twice on a director or after fates-clm execution completes....