SAN FRANCISCO -- The mortgage industry's woes may have come to roost at Fair Isaac (FIC)

The credit scoring software developer warned Monday that revenue and earnings for its first quarter ended in December would fall short of guidance.

The Minneapolis, Minn. company said its top line will range between $198 million and $200 million, vs. $208.2 million a year ago. Analysts polled by Thomson Financial expected $205.3 million, in line with the company's previous guidance.

Its stock was down $2.81, or 9.9%, to $25.53 in after-hours trading.

Net income will be $19 million to $20 million, or 37 cents to 39 cents a share. Analysts were looking for $24.1 million, or 45 cents a share. A year ago, the company had a net of $31.2 million, or EPS of 52 cents.

For the second fiscal quarter, the company expects revenue of $205 million and EPS of 44 cents, a penny short of analysts' estimates. Analysts were expecting revenue of $209.9 million.

For the full year 2008, the company now expects revenue to range from $825 million to $835 million. EPS will range from $1.80 to $1.90. Analysts were looking for a top line of $847.8 million and EPS of $1.98.

The developer of the FICO credit score is expected to release a full earnings report Jan. 22.

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