DFRDuino Uno V3.0 R3 not operating with Arduino Software 1.8

Hi,
I can upload the BLINK programe with Arduino software version 1.6.0 but not with Arduiono software version 1.8.1.
Does anyone know why?


Regards
Rob

I obtain the following errors when compiling the BLINK programe:
WARNING: Category '' in library EEPROM is not valid. Setting to 'Uncategorized'
WARNING: Category '' in library SPI is not valid. Setting to 'Uncategorized'
WARNING: Category '' in library SoftwareSerial is not valid. Setting to 'Uncategorized'
WARNING: Category '' in library Wire is not valid. Setting to 'Uncategorized'
Warning: platform.txt from core 'Arduino AVR Boards' contains deprecated compiler.path={runtime.ide.path}/hardware/tools/avr/bin/, automatically converted to compiler.path={runtime.tools.avr-gcc.path}/bin/. Consider upgrading this core.
Warning: platform.txt from core 'Arduino AVR Boards' contains deprecated tools.avrdude.cmd.path={runtime.ide.path}/hardware/tools/avr/bin/avrdude, automatically converted to tools.avrdude.cmd.path={path}/bin/avrdude. Consider upgrading this core.
Warning: platform.txt from core 'Arduino AVR Boards' contains deprecated tools.avrdude.config.path={runtime.ide.path}/hardware/tools/avr/etc/avrdude.conf, automatically converted to tools.avrdude.config.path={path}/etc/avrdude.conf. Consider upgrading this core.
Warning: platform.txt from core 'Arduino AVR Boards' contains deprecated recipe.ar.pattern="{compiler.path}{compiler.ar.cmd}" {compiler.ar.flags} {compiler.ar.extra_flags} "{build.path}/{archive_file}" "{object_file}", automatically converted to recipe.ar.pattern="{compiler.path}{compiler.ar.cmd}" {compiler.ar.flags} {compiler.ar.extra_flags} "{archive_file_path}" "{object_file}". Consider upgrading this core.
Sketch uses 1028 bytes (3%) of program storage space. Maximum is 32256 bytes.
Global variables use 9 bytes (0%) of dynamic memory, leaving 2039 bytes for local variables. Maximum is 2048 bytes.

I obtain the following errors when uploading the BLINK programe:
WARNING: Category '' in library EEPROM is not valid. Setting to 'Uncategorized'
WARNING: Category '' in library SPI is not valid. Setting to 'Uncategorized'
WARNING: Category '' in library SoftwareSerial is not valid. Setting to 'Uncategorized'
WARNING: Category '' in library Wire is not valid. Setting to 'Uncategorized'
Warning: platform.txt from core 'Arduino AVR Boards' contains deprecated compiler.path={runtime.ide.path}/hardware/tools/avr/bin/, automatically converted to compiler.path={runtime.tools.avr-gcc.path}/bin/. Consider upgrading this core.
Warning: platform.txt from core 'Arduino AVR Boards' contains deprecated tools.avrdude.cmd.path={runtime.ide.path}/hardware/tools/avr/bin/avrdude, automatically converted to tools.avrdude.cmd.path={path}/bin/avrdude. Consider upgrading this core.
Warning: platform.txt from core 'Arduino AVR Boards' contains deprecated tools.avrdude.config.path={runtime.ide.path}/hardware/tools/avr/etc/avrdude.conf, automatically converted to tools.avrdude.config.path={path}/etc/avrdude.conf. Consider upgrading this core.
Warning: platform.txt from core 'Arduino AVR Boards' contains deprecated recipe.ar.pattern="{compiler.path}{compiler.ar.cmd}" {compiler.ar.flags} {compiler.ar.extra_flags} "{build.path}/{archive_file}" "{object_file}", automatically converted to recipe.ar.pattern="{compiler.path}{compiler.ar.cmd}" {compiler.ar.flags} {compiler.ar.extra_flags} "{archive_file_path}" "{object_file}". Consider upgrading this core.
Sketch uses 1028 bytes (3%) of program storage space. Maximum is 32256 bytes.
Global variables use 9 bytes (0%) of dynamic memory, leaving 2039 bytes for local variables. Maximum is 2048 bytes.
java.io.IOException: Cannot run program "{path}/bin/avrdude": CreateProcess error=2, The system cannot find the file specified
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1048)
at processing.app.helpers.ProcessUtils.exec(ProcessUtils.java:26)
at cc.arduino.packages.Uploader.executeUploadCommand(Uploader.java:129)
at cc.arduino.packages.uploaders.SerialUploader.uploadUsingPreferences(SerialUploader.java:207)
at cc.arduino.UploaderUtils.upload(UploaderUtils.java:78)
at processing.app.SketchController.upload(SketchController.java:709)
at processing.app.SketchController.exportApplet(SketchController.java:682)
at processing.app.Editor$DefaultExportHandler.run(Editor.java:2190)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.io.IOException: CreateProcess error=2, The system cannot find the file specified
at java.lang.ProcessImpl.create(Native Method)
at java.lang.ProcessImpl.<init>(ProcessImpl.java:386)
at java.lang.ProcessImpl.start(ProcessImpl.java:137)
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1029)
... 8 more
An error occurred while uploading the sketch