11/07/2007 AT 04:20 PM EST
has canceled the final show in her first-ever concert tour
, which she had undertaken with husband Marc Anthony.
The concert, originally scheduled for Oct. 24 in San Diego, was postponed because of the devastating fires in southern California
. It's now officially off altogether because of an unspecified "scheduling conflict," according to a press release issued by the concert's promoter.
"Unfortunately, rerouting the tour has been impossible due to the event's last-minute postponement caused by the area wildfire emergency," reads the statement from Live Nation.
Tickets for the event, which can be refunded at point of purchase, were slashed by $35 last month in an apparently unsuccessful move to boost lagging sales, the San Diego Union Tribune
The paper attributes the cancellation to that or Lopez's unofficially confirmed pregnancy
As for rumors Lopez, 38, needs a new record label
due to her diva demands and disappointing record sales, Epic Records tells PEOPLE that's simply not true. "We love Jennifer. We just made two new videos!" a rep for Epic tells PEOPLE.