remove blank string in the global_filter_plugin_argument_default_global_filter_view.inc

and blank line in the global_filter_plugin_argument_default_global_filter_field.inc file too
When I removed this line, the problem with "cannot modify header..." went away

It's my pleasure

in the 6.x - ok,
but in the 7.x-1.8 blank line is in the global_filter_plugin_argument_default_global_filter_proximity.inc, global_filter_plugin_argument_default_global_filter_field.inc and global_filter_plugin_argument_default_global_filter_view.inc

ok, thanks

on site with D6 I have the white screen of death (I have changed the filter programmatically before display a page)
and I have a message "cannot modify header..."
and when I removed blank lines - errors gone away

maybe it depends on hosting config and encoding, but in the readme for 6.x module you wrote

4) Update. Ignore the warning: "Cannot modify header information - headers
already sent...". Press Save.

when I removed blank lines - I have no errors. I had this type of error on all sites when I config views

In the d7 I don't test, just removed these lines. I can return the lines and see what happens
Sorry for my english)

ok, I will try and inform you

there are no errors in the 7.x version)
but, maybe, it's better to remove these blank lines?)