diff --git a/BoolODE/__init__.py b/BoolODE/__init__.py
index 70f71a4..83bf800 100644
--- a/BoolODE/__init__.py
+++ b/BoolODE/__init__.py
@@ -264,7 +264,7 @@ def do_post_processing(self):
                     for gsampPath in generatedPaths[jobid]:
                         settings = {}
                         invalid = False
-                        settings['outPrefix'] = gsampPath + '/' + gsampPath.split('/')[-1] + '-ss'
+                        settings['outPrefix'] = gsampPath + '/' + gsampPath.split(os.sep)[-1] + '-ss'
                         settings['expr'] = Path(gsampPath\
                                                 ,'ExpressionData.csv')
                         settings['pseudo'] = Path(gsampPath\
diff --git a/requirements.txt b/requirements.txt
index 8c10eb6..d4f118f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,3 +5,4 @@ tqdm==4.31.1
 seaborn==0.9.0
 pandas==0.24.2
 scikit-learn==0.21.3
+pyyaml==6.0.1
diff --git a/scripts/runSlingshot.py b/scripts/runSlingshot.py
index af628dc..624e57f 100644
--- a/scripts/runSlingshot.py
+++ b/scripts/runSlingshot.py
@@ -23,7 +23,7 @@
 def parseArgs(args):
     parser = OptionParser()
     
-    parser.add_option('', '--outPrefix', type = 'str',default='',
+    parser.add_option('', '--outPrefix', type = 'str', default='',
                       help='Prefix for output files.')
     
     parser.add_option('-e', '--expr', type='str',
@@ -70,8 +70,10 @@ def computeSSPT(ExpDF, ptDF, nClust, outPaths, noEnd = False, perplexity = 500):
     '''
     if nClust == 1:
         # Return simulation time as PseduoTime
-        for outPath in outPaths:
-            ptDF.loc[ExpDF.columns].to_csv(outPath+"/PseudoTime.csv", columns =['Time'])
+        ptDF.loc[ExpDF.columns].to_csv(outPaths + "/PseudoTime.csv", columns=['Time'])
+        # for outPath in outPaths:
+        #     print(outPath)
+        #     ptDF.loc[ExpDF.columns].to_csv(outPath+"/PseudoTime.csv", columns =['Time'])
  
     else:
         ### Compute PseudoTime ordering using slingshot
@@ -212,7 +214,8 @@ def computeSSPT(ExpDF, ptDF, nClust, outPaths, noEnd = False, perplexity = 500):
         tn.to_csv(outPaths+"/Updated_rd.tsv",
                   sep='\t')
         plt.savefig(outPaths+"/SlingshotOutput.png")
-    os.system("rm -rf temp/")
+    if sys.platform.startswith("linux"):
+        os.system("rm -rf temp/")
 
 def main(args):
     opts, args = parseArgs(args)
diff --git a/slingshot-docker/Dockerfile b/slingshot-docker/Dockerfile
index ca062e9..84de883 100644
--- a/slingshot-docker/Dockerfile
+++ b/slingshot-docker/Dockerfile
@@ -35,11 +35,11 @@ RUN apt-get install -y libssl-dev libcurl4-openssl-dev libgsl-dev\
 ##############
 ## Install R
 RUN echo "deb http://cran.rstudio.com/bin/linux/ubuntu xenial-cran35/" | tee -a /etc/apt/sources.list && \
-    gpg --keyserver keyserver.ubuntu.com --recv-key E084DAB9 && \
-    gpg -a --export E084DAB9 | apt-key add - && \
-    apt-get update && \ 
-    apt-get install -y r-recommended=${R_VERSION} && \
-    apt-get install -y r-base=${R_VERSION}
+    gpg --keyserver keyserver.ubuntu.com --recv-key 95C0FAF38DB3CCAD0C080A7BDC78B2DDEABC47B7 && \
+    gpg -a --export 95C0FAF38DB3CCAD0C080A7BDC78B2DDEABC47B7 | apt-key add - && \
+    apt-get update --allow-unauthenticated && \
+    apt-get install -y --allow-unauthenticated r-recommended=${R_VERSION} && \
+    apt-get install -y --allow-unauthenticated  r-base=${R_VERSION}
 RUN Rscript -e 'install.packages("BiocManager", repos = "http://cran.us.r-project.org")'
 
 ##############