The answer depends on what you mean by attend a Presbyterian Church.
Sometimes in cases where a couple are a "mixed religion" that is to say one is Catholic but the other is not, it is not uncommon for either party to attend the parishes of each other. In other words the Catholic always attends Mass, but then also attends the Church of their spouse. In this case, this is not wrong provided attending the Church of ones spouse does not weaken or damage or otherwise threaten the Faith of the Catholic, or provided the Church the Catholic attends in addition to attending Mass faithfully is not explicitly or implicitly anti-catholic.
However if one is Catholic but simply chooses to attend a non-catholic Christian Church, some red flags are raised. Why does such a person want to attend a non-catholic church? Why does such a person consider themselves Catholic when they do not want to attend Mass?
Actions are extremely important to pointing to what one believes. Therefore one who calls themselves "Catholic" yet never attends Mass, or never attends a Catholic parish, but a Protestant Church is by their actions showing that they reject the Catholic Faith and have embraced another Faith. That, therefore is considered sinful provided the conditions for "Sin" are met.
One may attend a Catholic Church if Presbyterian but may not receive communion.
Yes. All worshippers are free to attend services in any church. Updated response - Although it may be an acceptable truth that all worshipers are free to attend services in any church, the obligation for a Catholic is different. Each Catholic shares an obligation to attend Catholic mass on Sunday - The Mass within the Catholic community is the catalyst to receiving Holy Communion, which to a Catholic is a Holy Sacrament. Mass or service at any other Church for any other denomination, though spiritual and holy in its own right, does not allow a Catholic participation in the Consecration of the Holy Eucharist or therefore Holy Communion. Although there is nothing ecumenically wrong for a Catholic to attend a non-Catholic mass, liturgically this obligation to attend mass would not be fulfilled.
People who were not Catholic took over.
It's not wrong, they both worship the same God, however they can't really take communion in each others churches. Also, you can not use attendance at an Anglican service to take the the place of the requirement to attend a Catholic Mass on Sunday.
Corrupted by PowerThe Roman catholic church was the most powerful church in the whole of Europe at that point lol
Hugh Laurie is presbiterian Sorry but that is wrong. He was raised in a Presbyterian Church but, like his character House, he is an atheist.
Nothing because the Catholic Church is the Mystical Body of Christ. However, it is also filled with sinners, so there will obviously be problems.
The Catholic Church had become corrupt unfourtantely and priests and even the pope over used their power. They did such things as charged money for absolution.
They were told by the Catholic church it was the work of the devil and since the Catholic church told all what was right or wrong it was followed by the populace.
Martin Luther. He created the Lutheran Church because he felt what the catholic church was doing was wrong.
Roman Catholic AnswerThe Catholic Church does actively pursue all instances of crime by its priests. Why do people ask questions actively believing that the Church would be doing the wrong thing?
Because the Catholic doctrine was that Rome was the centre of the universe and all things revolved round it. When Galileo saw the moons of Jupiter orbiting jupiter, this proved that Catholic teaching and beliefs were wrong and if this was wrong, what else about Catholic teaching may be wrong!
Yes Not always. The Catholic Church has the Just War Theory.