EDIT: I filed a support ticket for it. This post should be deleted.

The following problem:

```
cvx_begin
variable x
variable y
maximize sum(x + y)
x <= 1
y <= 1
cvx_end
```

is met with an error

Error using <=

Matrix dimensions must agree.

Error in cvx_extract (line 377)

rx = rx(dx<=abs(c_slack(cx)));

Error in cvx_solve (line 26)

[ At, cones, sgn, Q, P, exps, dualized ] = cvx_extract( shim.config, shim.name );

Error in cvx_finish

Error in cvx_end (line 11)

evalin( ‘caller’, ‘cvx_finish’ );