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diff --git a/users/gsi_dirc/readme_after_upgrade_2021.txt b/users/gsi_dirc/readme_after_upgrade_2021.txt
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+After the upgrade made by Michal Traxler several thing had to be adjusted.
+
+Which system I am using:
+(lsb = linux standard base)
+
+lsb_release -a
+
+
+
+For python scripts acessing VISA the python3.7 nedded to be changed to 3.8
+
+VISA needed to be installed new as root:
+
+pip -install -U pyvisa