Adobe has delayed an upgrade to its free Photoshop Express software.

The beta version of the online photo-editing tool, which already allows users to integrate with Photobucket, Picasa and Facebook, should have been upgraded yesterday so users could also import images direct from Flickr.

However, after discovering a technical problem, Adobe delayed the upgrade.

"As you know, we were preparing updates to the Photoshop Express beta on May 7 that added significant new functionality to the product," Adobe told in a statement.

"However, prior to going live, we discovered a bug that requires a fix. We're committed to delivering a quality experience with Photoshop Express and don't want to send out an update that isn't ready for prime time."

Adobe also highlighted that it is "working on a quick resolution". However, a new date for the upgrade has yet to be confirmed.

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