Complies but with errors (1 reply)

Hi all
Having a little trouble compiling Marlin 1.1.0 RC7 with IDE 1.8.3
I get the following errors

In file included from sketch\MarlinConfig.h:30:0,

from C:\Users\Ian\Desktop\3D\CTC Large\RC7\Marlin-RC\Marlin\Marlin.ino:38:

sketch\Configuration.h:718:28: warning: ISO C99 requires whitespace after the macro name

#define BED_CENTER_AT_140.75_78.5 //#define BED_CENTER_AT_149_75

I know its something to do with updating IDE to 1.8.3 how do I correct these errors.
I have tried going back to 1.0.6, 1.7.9 and 1.7.10
These give different errors than these.
I cannot remember which IDE I used as I have 3 machines all running different versions of Marlin

Any help in correcting these errors would be much appreciated

Thanks in advanced for any help

Suggy