I tried region render with using jigsaw panel and with Arnold but thrown file name is not right.
STDOUT: 00:00:00 571MB | [driver_exr] writing file `P:/shows/DevMaya/regionRenderingTest/images/still/v03/layer2/test.0001.exr'
STDOUT: 00:00:00 570MB | render done
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INFO: Calling tile assembler on P:/shows/DevMaya/regionRenderingTest/images/still/v03/layer2\_region_1_test.0001.exr
Arnold driver exr write without modified name. (ex. region_0)
And assembler could not find file.
Anybody has solution?