In addition, Lawson assigned inexperienced staff to the job, which ended up serving as a "trial and error," on-the-job training program for the LTM module, according to the suit.

During a June conference call, Lawson used Infor's purchase of Lawson this year as an excuse for the problems, saying it was "distracted" by the merger.

CareSource is demanding at least US$1.5 million in damages, a sum representing the cost of licensing the software, purchasing hardware, consulting fees and other costs.

In a counterclaim filed Sept. 2, Lawson denied CareSource's breach of contract claim and other alleged wrongdoing, while stating that "certain issues arose" with regard to the LTM-S3 integration. However, those matters were resolved, according to the filing.

Also, while the software remained in testing mode and did not go live, the project was "halted" by CareSource before it filed suit, Lawson added.