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-rw-r--r--PyMca5/PyMcaGui/pymca/SilxGLWindow.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/PyMca5/PyMcaGui/pymca/SilxGLWindow.py b/PyMca5/PyMcaGui/pymca/SilxGLWindow.py
index d1b0380..5fe074a 100644
--- a/PyMca5/PyMcaGui/pymca/SilxGLWindow.py
+++ b/PyMca5/PyMcaGui/pymca/SilxGLWindow.py
@@ -153,7 +153,7 @@ def getChimeraStack():
if not fileList:
return None, None
filename = fileList[0]
- with h5py.File(filename) as f:
+ with h5py.File(filename, mode='r') as f:
stack = f['Image/data'][...]
if not isinstance(stack, numpy.ndarray) or stack.ndim != 3:
raise IOError("Problem reading stack.")