I am trying to open a Jp2 file in QGIS 3.4.5 on a macOS 10.14.5 Mojave.
I am new to QGIS and have been looking through forums that discuss GRASS and GDAL but I don't understand the connection to QGIS.
DETAILS: - When I "drag and drop" I get the dreaded beachball and QGIS remains unresponsive. - The file is a statewide raster of magnetic data, roughly 120 MB. It also won't open in preview, with the following error "It may be damaged or use a file format that Preview doesn’t recognise". - The GDAL version is 2.4 which I downloaded and installed from www.kyngchaos.com.
Can you give me a simple explanation?