Applying Patches to Drupal modules - How to deal with error messages? I am trying to apply patch #110 from here in Drupal 7 - ViewsCalc.

I am following the instructions on this page: Applying patches on Mac OS X

When following the instructions, I get this error message:

Perhaps you should have used the -p or --strip option?
The text leading up to this was:
--------------------------
|diff --git a/theme.inc b/theme.inc
|index 57d61ed..7db435b 100644
|--- a/theme.inc
|+++ b/theme.inc
--------------------------
File to patch: 


What should I do? 

I've tried giving it the path to the theme.inc file.  When I do this, it displays the following:

No such file or directory
Skip this patch? [y] 


As a work around, I have installed Drush Issue Queue Commands and I have applied the following command in Drush:
drush iq-apply-patch 140665-#110

When I use this Drush command, I get the following error message:

Drush iq-apply-patch 140665-1: downloading patchfile                 [ok]
views_calc_grouping_140665-114.patch for project views_calc
Could not apply the patch with either -Np0 or -Np1; perhaps the patch[error]
was rolled for a different version of the project.


What am I doing wrong?

PS. I'm not sure if this is a valid question, as it deals with patching. However, it also deals with topics such as Drush so I believe it is on topic. If it is off topic, please could you direct me to the correct place to post it.
Thanks for all the help. I worked this out!

When I was applying the patch, I placed the patch file in the root module directory. But it actually has to go inside in the directory of the actual module. Whoops!

E.g. 

The patch goes inside of sites&gt;all&gt;modules&gt;views_calc
and not inside of sites&gt;all&gt;modules.