Mathcad Error, would appreciate help.

Hi all,

I'm entirely new to planetPTC, so I apologize if I am posting this in the wrong area.

I've been using Mathcad for a year and a half, but recently began experiencing problems with the mathematical operators. Larger operators such as the definite and indefinite integral no longer appear, but are instead replaced with a long row of placeholders. The functions themselves still work; the operators that represent the functions are the problem.

In the picture below, I have attempted to bring up several operators. From top to bottom they are:

Definite Integral

Indefinite Integral

Summation (Sigma)

Multiplication (asterisk)

Fraction Inside a Parenthesis

The image has been attached to this post, in case it cannot be read as it is.

Any help is appreciated!