The 'Keeping Up with the Kardashians' star was set to make a personal appearance at 1OAK nightclub on Friday night (10.07.15) but pulled out of the planned spot just 24 hours beforehand following his split from his girlfriend of almost a decade.
A release from the nightspot said: ''The evening will resume as scheduled with a performance by DJ Shift.''
Earlier this week, the 32-year-old hunk broke his social media silence following their break-up by teasing how excited he was for the bash.
He wrote on Instagram: ''Come party with me this Friday in Vegas''.
The event isn't the first one the reality star has missed since their split was revealed, as he also skipped his daughter Penelope's third birthday at Disneyland on Wednesday (08.07.15) as he was in Florida.
Meanwhile, pals of Scott and 36-year-old Kourtney - who along with Penelope also have sons Mason, five, and six-month-old Reign - are sceptical about whether they will ever rekindle their romance, after a woman began removing Scott's belongings from their shared home earlier this week.
A source told Us Weekly: ''Kourtney and Scott's friends are trying to fix this mess and get them to work things out, but the whole situation is very bad and it's unclear if they'll bounce back from this.''
Another source said: ''Kourtney would never stay with someone who cheats on her.''
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