CLIENT - unhandled error in GUI - IllegalStateException

Error type: CLIENT - unhandled error in GUI - IllegalStateException

Client version: 1.4.60-V3 (build: 2026-07-11 16:01)
Java version: 1.8.0_201
Default charset: UTF-8
Time: 2026-08-08T08:31:11Z

Not enough cards to generate deck (cards pool too small)

Stack trace:
mage.client.deck.generator.DeckGeneratorPool.generateSpells(DeckGeneratorPool.java:695)
mage.client.deck.generator.DeckGenerator.generateDeck(DeckGenerator.java:159)
mage.client.deck.generator.DeckGenerator.buildDeck(DeckGenerator.java:80)
mage.client.deck.generator.DeckGenerator.generateDeck(DeckGenerator.java:46)
mage.client.table.NewPlayerPanel.generateDeck(NewPlayerPanel.java:55)
mage.client.table.NewPlayerPanel.btnGenerateActionPerformed(NewPlayerPanel.java:174)
mage.client.table.NewPlayerPanel.lambda$initComponents$1(NewPlayerPanel.java:120)
javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348)
javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
and other 33 lines

Start with mage.client.deck.generator.DeckGeneratorPool.java at line 695 and follow the calls through DeckGenerator.java and NewPlayerPanel.java. Reproduce the failure by using the new-player GUI deck-generation action with a card pool that is too small. Done means this condition no longer produces an unhandled GUI IllegalStateException, with the intended user-visible behavior confirmed from the surrounding code.

Written by the indexing model from the issue text.