diff --git a/rowers/dataroutines.py b/rowers/dataroutines.py
index 422226bd..d2857736 100644
--- a/rowers/dataroutines.py
+++ b/rowers/dataroutines.py
@@ -1619,21 +1619,24 @@ def read_data(columns, ids=[], doclean=True, workstrokesonly=True, debug=False,
                     stringcolumns.append(c)
                 else:
                     intcolumns.append(c)
-                
-        data = [
-            df.with_columns(
-                cs.float().cast(pl.Float64)
-            ).with_columns(
-                cs.integer().cast(pl.Int64)
-            ).with_columns(
-                cs.by_name(intcolumns).cast(pl.Int64)
-            ).with_columns(
-                cs.by_name(floatcolumns).cast(pl.Float64)
-            ).with_columns(
-                cs.by_name(stringcolumns).cast(pl.String)
-            )
-            for df in data
-        ]
+
+        try:
+            data = [
+                df.with_columns(
+                    cs.float().cast(pl.Float64)
+                ).with_columns(
+                    cs.integer().cast(pl.Int64)
+                ).with_columns(
+                    cs.by_name(intcolumns).cast(pl.Int64)
+                ).with_columns(
+                    cs.by_name(floatcolumns).cast(pl.Float64)
+                ).with_columns(
+                    cs.by_name(stringcolumns).cast(pl.String)
+                )
+                for df in data
+            ]
+        except ComputeError:
+            pass
 
         try:
             datadf = pl.concat(data)
diff --git a/rowers/tests/testdata/testdata.tcx.gz b/rowers/tests/testdata/testdata.tcx.gz
index 0dcea5ec..68aa1a17 100644
Binary files a/rowers/tests/testdata/testdata.tcx.gz and b/rowers/tests/testdata/testdata.tcx.gz differ