Angry Grey's Anatomy fans lashed out at CTV on Friday after the network inadvertently aired the second episode of the season rather than the season premiere.
One blogger said: "Can I just say that CTV is a crappy irresponsible network?"
"Yes, I know errors happen, but this is one of the biggest shows on TV these days," wrote carmen16. "(I'm) just not impressed."
"Stupid people who don't know how to push buttons right. I am most seriously displeased," posted another who identified herself as "Lynda."
Others who hadn't yet seen Episode 2 were concerned CTV's mistake would ruin it for them.
"Now that I know that Canada got next week's episode, I'm going to be frightened of spoilers constantly until next week!" wrote "jasminelily."
CTV spokesman Mike Cosentino said the network took in its regular satellite feed of the show thinking that it was the season premiere.
"We were fed an incorrect show," he said Friday. "We are absolutely committed to delivering Episode 1 in its entirety to viewers. .... We recognize the scope of this situation."
CTV announced Friday that it will air the season premiere next Thursday.
The error came as Grey's Anatomy made its much-anticipated debut in its new Thursday night timeslot.
On CTV, the show airs at 8 p.m. ET, while the U.S. version airs at 9 p.m. on ABC.
That means viewers could have watched Episode 2 on CTV and then tuned in to the season premiere on ABC.
After a cliffhanger finale, Grey's Anatomy fans had waited all summer to see what would happen on the show, which follows the tumultuous lives of a group of Seattle doctors.
Consentino called the CTV glitch a "good news/bad news scenario."
"The bad news is viewers missed Episode 1 and we're working on the right solution to remedy that, and the good news is Episode 2 is fantastic."