Fusion 8.2b1 testrun does not work on debian.

if you choose the "Try Blackmagic Fusion without installing" option from the installer (option '-t') on a recent debian like system, you will see this error message:

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~/Downloads$ ./Blackmagic_Fusion_8.2_installer.run -t
QWizard::setField: No such field 'options.uninstall'
/tmp/.mount_5jkXLW/AppRun: 13: [: 77: unexpected operator


the reason for this issue:

debian usually doesn't use 'bash' but the faster and more lightweight 'dash' to handle shell scripts.
dash is much more picky concerning posix conformance.

instead of:

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...
# Launch the try-out
if [ $? == 77 ]; then


you have to use:

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if [ $? = 77 ]; then

this should work on most systems. the bash manual explains about this topic:

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       string1 == string2
       string1 = string2
              True if the strings are equal.  = should be used with  the  test
              command  for  POSIX conformance.