I am attempting to use the 'Merge' & 'Create VRT' tools in QGIS 2.0 on a folder with 3000+ raster tiles in. However whenever I try to perform this operation the following error appears:
'The process failed to start. Either the invoked program is missing, or you may have insufficient permissions to invoke the program.'
The process works when I select only a few tiles, so I can only assume it's due to a character restriction due to the number of files?
Upon searching the website for a solution I came across the concept of using 'Wildcards' to get around this problem:
However I cannot find any clear explanation on how to use them, and I don't have much experience with using OSGeo4W outside of the QGIS GUI. I would appreciate any help or advice.