Arsthbt

First of all, I have looked at every other misplaced omit... error question about tables I have found on this site and none of them quite relate to my situation. This is the closest I could find, but it does not quite fit my application the solution relates to using tabularnewline vs \ in cells which I am not using.

I am attempting to make a table which looks almost like this:

The above example was generated from the following.

documentclassarticle
usepackagearray

begindocument
begintable
begintabularm1inm1inm1in
cline1-1
multicolumn1m1intextbfCaption & cell of muliline text to wrap & cell of muliline text to wrap \ cline1-2
multicolumn1cell of muliline text to wrap & multicolumn1textbfCaption & cell of muliline text to wrap \ cline2-3 
cell of muliline text to wrap & multicolumn1cell of muliline text to wrap & multicolumn1textbfCaption \ cline3-3 
endtabular
endtable
enddocument

However, I would like the columns to be centered instead of justified. I would normally do this by replacing all instances of m1in with >centeringm1in. But when I do this I get the following error.

! misplaced omit.@cline #1-#2@nil -> ...

How do I reproduce the above table format but with centered columns?

documentclassarticle
usepackagearray

begindocument
begintable
begintabular*3>centeringarraybackslashm1in
cline1-1
multicolumn1m1intextbfCaption & cell of muliline text to wrap & cell of muliline text to wrap \ cline1-2
multicolumn1cell of muliline text to wrap & multicolumn1textbfCaption & cell of muliline text to wrap \ cline2-3 
cell of muliline text to wrap & multicolumn1cell of muliline text to wrap & multicolumn1textbfCaption \ cline3-3 
endtabular
endtable
enddocument

within the scope of centering, \ is redefined to make a centred forced line break, so no longer has its "end table row" definition. You can either use arraybackslash to re-assert the table definition of \ or you could use tabularnewline instead of \ which is a longer form provided that always refers to the end of table row.