Output driver `img' not recognised.
The following format drivers are configured and support output:
  VRT: Virtual Raster
  GTiff: GeoTIFF
  NITF: National Imagery Transmission Format
  HFA: Erdas Imagine Images (.img)
  ELAS: ELAS
  AAIGrid: Arc/Info ASCII Grid
  DTED: DTED Elevation Raster
  PNG: Portable Network Graphics
  JPEG: JPEG JFIF
  MEM: In Memory Raster
  GIF: Graphics Interchange Format (.gif)
  XPM: X11 PixMap Format
  BMP: MS Windows Device Independent Bitmap
  PCIDSK: PCIDSK Database File
  PCRaster: PCRaster Raster File
  ILWIS: ILWIS Raster Map
  SRTMHGT: SRTMHGT File Format
  Leveller: Leveller heightfield
  Terragen: Terragen heightfield
  PNM: Portable Pixmap Format (netpbm)
  ENVI: ENVI .hdr Labelled
  EHdr: ESRI .hdr Labelled
  PAux: PCI .aux Labelled
  MFF: Vexcel MFF Raster
  MFF2: Vexcel MFF2 (HKV) Raster
  BT: VTP .bt (Binary Terrain) 1.3 Format
  IDA: Image Data and Analysis
  ERS: ERMapper .ers Labelled
  FIT: FIT Image
  RMF: Raster Matrix Format
  RST: Idrisi Raster A.1
  INGR: Intergraph Raster
  GSAG: Golden Software ASCII Grid (.grd)
  GSBG: Golden Software Binary Grid (.grd)
  USGSDEM: USGS Optional ASCII DEM (and CDED)
  ADRG: ARC Digitized Raster Graphics