diff --git a/buildbucket/buildbucket_environment.yaml b/buildbucket/buildbucket_environment.yaml
index 13e442b0f896f66f6e4038055df1fc037c0e74a9..109aa36eecae9d1c9dd68c9f401e2d966a3ecf2c 100644
--- a/buildbucket/buildbucket_environment.yaml
+++ b/buildbucket/buildbucket_environment.yaml
@@ -4,7 +4,7 @@ channels:
 dependencies:
   - conda-pack
   - curl
-  - dask
+  - dask<=2.3.0 # this is to avoid dask hangs we saw using 2021.2.0
   - distributed
   - netcdf4
   - pip
@@ -27,4 +27,4 @@ dependencies:
     - git+https://github.com/deeplycloudy/lmatools.git@minvaluegrids
     - git+https://github.com/deeplycloudy/stormdrain.git
     - git+https://github.com/deeplycloudy/glmtools.git@master
-    - git+https://github.com/pytroll/satpy.git@3544d60940dba9129499ac3ee303c0705a9ddf7b
\ No newline at end of file
+    - git+https://github.com/pytroll/satpy.git@d556c806e2b66e5ac1c5b0613c6290edfeb43b92
\ No newline at end of file
diff --git a/gridded_glm/PACKAGE_README.md b/gridded_glm/PACKAGE_README.md
index 557e6b45db00af84f32971cd523021c40a59790f..315fbb2d85049bbe00f10167f3da13f4e0abc355 100644
--- a/gridded_glm/PACKAGE_README.md
+++ b/gridded_glm/PACKAGE_README.md
@@ -19,7 +19,7 @@ Questions and comments can be directed to csppgeo.issues@ssec.wisc.edu.
 The developers wish to thank:
 ​
 Eric Bruning, developer of the open source glmtools package which this software is based on,
-Scott Rudlosky, GOES-R GLM Science Team lead and developer of the Gridded GLM products,
+Scott Rudlosky, GOES-R GLM Science Team lead and PI of the NOAA GLM Gridded Products effort,
 Lee Byerle and Joe Zajic, NWS TOWR-S team, for their assistance with tile development and AWIPS compatibility.
 ​
 ## COPYRIGHT / LICENSE / DISCLAIMER
@@ -40,7 +40,7 @@ The University of Wisconsin-Madison Space Science and Engineering Center (SSEC)
 To install, extract the tarball and optionally add the bin directory to your PATH.
 ​
 tar xf cspp-geo-gridded-glm-1.0b1.tar.xz
-export PATH=$PATH:$PWD/cspp-geo-gridded-glm-1.0/bin
+export PATH=$PATH:$PWD/cspp-geo-gridded-glm-1.0b1/bin
 ​
 A test data tarball can be downloaded from the same location as the software. Reference output is included. Refer to the EXAMPLES section below to run the test case.​
 
diff --git a/gridded_glm/libexec/_minute_gridder.py b/gridded_glm/libexec/_minute_gridder.py
index fd5c872008a50e30804305693f4f9799b2e7ff15..42353f16d59dbb7c5d5eeed214ae5cc264346ed1 100644
--- a/gridded_glm/libexec/_minute_gridder.py
+++ b/gridded_glm/libexec/_minute_gridder.py
@@ -44,6 +44,7 @@ import shutil
 import atexit
 from glob import glob
 import socket
+import signal
 from netCDF4 import Dataset
 #from multiprocessing import freeze_support # https://docs.python.org/2/library/multiprocessing.html#multiprocessing.freeze_support
 from functools import partial
@@ -54,9 +55,11 @@ from glmtools.io.glm import parse_glm_filename
 from lmatools.grid.fixed import get_GOESR_grid, get_GOESR_coordsys
 
 import logging
-
 log = logging.getLogger(__name__)
 
+import dask
+dask.config.set(num_workers=1)
+
 def create_parser():
     import argparse
     prog = os.getenv('PROG_NAME', sys.argv[0])
@@ -87,8 +90,8 @@ def create_parser():
                         "of data is available (default: off)")
     parser.add_argument('--system-environment-prefix', default="CG",
                         help="set the system environment prefix for the output grids (default: CG)")
-    parser.add_argument('--system-environment-prefix-tiles', default="CG",
-                        help="set the system environment prefix for the output tiles (default: CG)")
+    parser.add_argument('--system-environment-prefix-tiles', default="CSPP_OR",
+                        help="set the system environment prefix for the output tiles (default: CSPP_OR)")
     # from Requirements: "Input is one or more GLM LCFA (L2+) files in mission standard format (nominally three 20-second input files)"
     parser.add_argument(dest='filenames', metavar='filename', nargs='+')
     return parser
@@ -157,7 +160,9 @@ def get_outpath_base(args):
             start_time, end_time: datetimes that can be used with strftime syntax, e.g.
                 './{start_time:%y/%b/%d}/GLM_{start_time:%Y%m%d_%H%M%S}.nc'
     """
-    ops_environment, algorithm, platform, start_time, end_time, created_time = parse_glm_filename(os.path.basename(args.filenames[0]))
+    ordered_filenames = sorted(args.filenames)
+    _, _, platform, start_time, _, _ = parse_glm_filename(os.path.basename(ordered_filenames[0]))
+    _, _, _, _, end_time, _ = parse_glm_filename(os.path.basename(ordered_filenames[-1]))
 
     sector_short = get_sector_shortstring(args)
     mode = "M3" # FIXME: is GLM always in M3?
@@ -300,8 +305,13 @@ def add_gglm_attrs(netcdf_filename, input_filenames):
     except:
         log.error("could not add CSPP Geo GGLM attributes to {}".format(netcdf_filename))
 
+def alarm_handler(signum, frame):
+  raise OSError("Timeout exceeded!")
 
 if __name__ == '__main__':
+    signal.signal(signal.SIGALRM, alarm_handler)
+    signal.alarm(10*60) # timeout if we're not done after 10 minutes
+
 #    freeze_support() # nb. I don't think this is needed as we're not making windows execs at this time
     parser = create_parser()
     args = parser.parse_args()