“Knight & Day” leading man Tom Cruise took to his Web page yesterday to thank the “wonderful people of Boston” for rolling out the red carpet for his cast and crew. “My family and I would like to take this opportunity to thank you for your warmth and hospitality during our incredible stay here,” wrote Cruise, who began filming “Knight & Day” (then called ‘Wichita’) with Cameron Diaz on Sept. 15 in Worcester. “We absolutely love Boston and will treasure our memories of the Freedom Trail, the Duck Tours, the museums, restaurants, and gorgeous parks. It was an autumn to remember!”

Now in its 15th year, Powderhouse Productions, located in Somerville’s Davis Square, develops and creates “dazzlingly original, award-winning factual and alternative entertainment for television and emerging media,” according to the company’s tagline, shown on cable channels such as PBS, TLC, Discovery, History, National Geographic and Animal Planet across the country and around the world.

State Rep. Ronald Mariano said the current situation is regrettable, but he’s optimistic. “Tri-Town is doing as well now as it’s ever done,” the Quincy Democrat said. “Have we had missteps and setbacks? Absolutely. It was trial-and-error for a while there. But I think we’re on the right track.”

“It’s certainly a bump in the road,’’ said David Kirkpatrick about the Prosperity debacle. And then Kirkpatrick returned his attention to the most critical remaining task. He’s trying once again to find the money to build his studio. “We’re going to try to persist and drive through this,’’ he said. “We do have some alternatives that we’re looking at right now. And we are hopeful and optimistic that those might emerge.’’

It’s a pity the developers of a major film soundstage project planned for Plymouth have lost their financing, just as the commonwealth’s profile as a go-to state for movie productions is on the rise. But neither the developers nor their supporters on Beacon Hill ought to get any ideas about taxpayers stepping into the breach. This project has terrific potential and we wish the developers well in putting a deal together. But by heavily subsidizing film production costs, the taxpayers are already doing their fair share.

“You’d be amazed at the number of people who are involved in the production of a 30 second commercial. We hire dozens of people, and there are also the local services that we purchase, such as transportation and supplies. Not to mention all the restaurants, hotels, and tourist destinations that get extra business.” said Jim Bacharach of John Hancock. “I think that looking ahead we will always think of Massachusetts first for shooting our commercials.

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“Like any development project, it is a difficult process,” Murray said. “And it is up to the studio now to go out and find other financing. With the possibility of the economy improving, and the project’s ability to generate short-term and long-term jobs, the community remains hopeful that there are other lenders who will see the great value of this project.”

“It definitely slows the project down a bit,” said Kevin O’Reilly, a spokesman for the project. “One of the good things is that the principals have been talking to other lenders and they’re hoping that something will materialize.”

The studio said it is now attempting to arrange alternate funding and suggested that the improving economy might enable them to make a better deal. “With the current economic indicators showing improvement, our decision is in the long-term interest of the project, our shareholders, our strategic partners, and our many other constituents, including the town of Plymouth and the Commonwealth,’’

State Environmental Affairs Secretary Ian Bowles notified Plymouth Rock officials yesterday that their exhaustive Environmental Impact Report for the studio project – a required permitting step – has been approved. Bowles also noted “the studio would represent a major step forward for the growing film industry in Massachusetts,’’ and added “the project has the potential to create a major economic engine for the southeast region,’’ generating more than 3,000 jobs.

Senate President Therese Murray and House Speaker Bob Deleo also signaled strong support for the film tax credit. Murray, speaking at Patrick’s economic summit yesterday in downtown Boston, said the credit has brought scores of movie productions to Massachusetts over the past few years – and it’s on the verge of paying huge dividends if new studios are built here.

Producer Todd Garner said big-budget movies are undoubtedly good for the local economy. “A lot of people come in and there’s work on a lot of different levels, from hotels and restaurants to dry cleaners to nanny services,’’ he said.

The production crew built two new basketball courts; the parking lot has been fixed up, and the local Field of Dreams has been reseeded. Beyond the $150,000 the town received, many local officials and business owners say the movie has pumped close to $1 million into the local economy during this recession. Antique stores, restaurants, local builders and saw mills all benefitted from having the production company’s presence in town. Manchester Essex Little League was given $25,000; the Essex Musical Festival took in $6,000; and the Essex Youth Commission got a $3,000 donation. “It wasn’t just the frosting on the cake,” said local businessman Bob Coviello, “it was the cake.”

Councilors Stephen Murphy and Bill Linehan want the city to reap more benefits from the state’s growing movie industry business that’s so far generated an estimated $700 million in spending since state tax incentives took effect in 2006.

The tax credits have been a rousing success, bringing in $3.6 million more in revenue than they cost and generating from $500 million to $900 million in ancillary revenue and thousands of jobs, according to the state Department of Revenue.

Long time Boston institution John Hancock Insurance Co. recently decided to shoot its TV commercials here, partly because of the tax credit and partly because the company wants to support other local businesses, according to Jim Bacharach, vice president of brand communications and creative services.

The answer to the state’s budget woes is job creation according to House Speaker Robert DeLeo. He said the film tax credit is a “good investment” for the state. He recalled visiting a TV shoot at the State House earlier this year and learning that most workers on the film crew were from Massachusetts. When asked what else they would be doing, he said many told him they would otherwise be unemployed.