Hi If you want PD 0.50 on Ubuntu Studio or Debian it's better to build it from source and maka a default install on /usr/local/ and run without problem two PD versions. One 0.49 (apt install puredata, "puredata" on terminal) and another 0.50 (builded from source, "pd" on terminal). Both can share the same pd-settings file. Best
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