diff --git a/src/evb/CompassFile.cpp b/src/evb/CompassFile.cpp
index 80b1d9e..08cb2d2 100644
--- a/src/evb/CompassFile.cpp
+++ b/src/evb/CompassFile.cpp
@@ -42,6 +42,7 @@ namespace EventBuilder {
 		m_eofFlag = false;
 		m_hitUsedFlag = true;
 		m_filename = filename;
+		m_nHits = 0;
 		m_file->open(m_filename, std::ios::binary | std::ios::in);
 		m_file->seekg(0, std::ios_base::end);
 		m_size = m_file->tellg();
diff --git a/src/evb/EVBWorkspace.cpp b/src/evb/EVBWorkspace.cpp
index e0675b8..d751bb3 100644
--- a/src/evb/EVBWorkspace.cpp
+++ b/src/evb/EVBWorkspace.cpp
@@ -58,6 +58,7 @@ namespace EventBuilder {
         m_analyzedDir = m_workspace + "analyzed/";
         m_histogramDir = m_workspace + "histograms/";
         m_cutDir = m_workspace + "cuts/";
+        m_mergedDir = m_workspace + "merged/";
 
         //Check all subdirectories. Terminate if any of them are bad
         m_isValid = CheckSubDirectory(m_binaryDir);
@@ -79,6 +80,9 @@ namespace EventBuilder {
         if(!m_isValid)
             return;
         m_isValid = CheckSubDirectory(m_cutDir);
+        if(!m_isValid)
+            return;
+        m_isValid = CheckSubDirectory(m_mergedDir);
     }
 
     std::string EVBWorkspace::GetBinaryRun(int run)
@@ -126,9 +130,11 @@ namespace EventBuilder {
         std::vector<std::string> list;
         std::string temp;
         for(int run=runMin; run<=runMax; run++)
+        {   
             temp = GetAnalyzedRun(run);
             if(!temp.empty())
                 list.push_back(temp);
+        }
 
         return list;
     }
@@ -187,7 +193,7 @@ namespace EventBuilder {
             return false;
 
         TFile* output = TFile::Open(outputname.c_str(), "RECREATE");
-        if(!output->IsOpen())
+        if(!output || !output->IsOpen())
         {
             EVB_ERROR("Could not open output file {0} for merge", outputname);
             output->Close();
@@ -196,8 +202,15 @@ namespace EventBuilder {
 
         TChain* chain = new TChain("SPSTree", "SPSTree");
         for(auto& entry : files)
+        {   
+            EVB_INFO("Merging file: {0}", entry);
             chain->Add(entry.c_str());
-        chain->Merge(output, 0, "fast");
+        }
+        //Note: TChain merge is kinda fucked. It requires a file passed in, which it then implicitly takes ownership of.
+        //By passing the keep option, we tell TChain we want to keep ownership of the file (otherwise it will automatically close and delete)
+        //We need ownership because the Merge function does not do a good job of handling errors explicitly.
+        chain->Merge(output, 0, "fast|keep");
+
         output->Close();
         return true;
     }
diff --git a/src/evb/SFPPlotter.cpp b/src/evb/SFPPlotter.cpp
index 3752199..c5e05a0 100644
--- a/src/evb/SFPPlotter.cpp
+++ b/src/evb/SFPPlotter.cpp
@@ -54,7 +54,7 @@ namespace EventBuilder {
 	/*Makes histograms where only rejection is unset data*/
 	void SFPPlotter::MakeUncutHistograms(const ProcessedEvent& ev, THashTable* table)
 	{
-		MyFill(table,"x1NoCuts_bothplanes",600,-300,300,ev.x2);
+		MyFill(table,"x1NoCuts_bothplanes",600,-300,300,ev.x1);
 		MyFill(table,"x2NoCuts_bothplanes",600,-300,300,ev.x2);
 		MyFill(table,"xavgNoCuts_bothplanes",600,-300,300,ev.xavg);
 		MyFill(table,"xavgNoCuts_theta_bothplanes",600,-300,300,ev.xavg,100,0,TMath::Pi()/2.,ev.theta);